§-Syllabus dot point

NSWAncient HistorySyllabus dot point

How did the Helot economy and the krypteia underpin and threaten the Spartan state?

The Helot system as the economic basis of Spartan society: the kleros and syssitia, the fixed-share/half-share rent tradition (Plutarch, Tyrtaeus), Helot numbers and the fear of revolt, the krypteia and the ephors' annual declaration of war as mechanisms of control, Helots in war, the Messenian revolts, and the economic impact of Messenia's liberation in 370/369 BC

A focused answer to the HSC Ancient History dot point on the Helot economy and the krypteia. The kleros and syssitia, Tyrtaeus and Plutarch on Helot rents, Thucydides 4.80 on Spartan fear, the ephors' declaration of war, the 464 BC revolt, and the verdicts of de Ste Croix, Cartledge, Hodkinson, Figueira and Whitby.

Generated by Claude Opus 4.813 min answerUpdated 2026-07-01

Reviewed by: AI editorial process; not yet individually human-reviewed

Have a quick question? Jump to the Q&A page

Quick answer

The Helot system was the economic foundation of Spartan society: Helots worked the kleros so that Spartiates could train full-time as hoplites, paying either a proportional "half share" (Tyrtaeus) or a fixed quota (Plutarch, Life of Lycurgus 8) toward the syssitia. Vastly outnumbering the Spartiates (Herodotus implies about seven to one at Plataea, 479 BC), the Helots were controlled through the ephors' annual declaration of war and the krypteia, which Plato frames as endurance training and Plutarch frames as licensed killing. Revolts (Ithome from 464 BC) and wartime crises (Sphacteria 425 BC, prompting Brasidas's 424 BC neodamodeis campaign, and Thucydides's account of 2,000 vanished Helots) show the system under constant strain, and its collapse was total once Epaminondas liberated Messenia in 370/369 BC, a sequence de Ste Croix and Cartledge read as permanent class war and Hodkinson, Figueira, and Whitby read more cautiously as real but variable and imperfectly documented.

Jump to a section

What this dot point is asking
The answer
How to read a source on this topic
Historians on the Helot system

What this dot point is asking

NESA expects you to explain the Helot system as the economic foundation of Spartan society: how the kleros and its Helot labour force released Spartiate men from farming, trade, and craft to train full-time as hoplites, how Sparta controlled a Helot population that vastly outnumbered its citizens, and how the removal of that economic base in 370/369 BC ended Spartan power. Strong answers integrate named ancient sources (Tyrtaeus, Herodotus, Thucydides, Plato, Aristotle, Plutarch) and weigh the "class war" reading of Sparta against more sceptical modern accounts.

In plain English

Imagine a small town where every adult citizen is a full-time, elite athlete, training every single day, because a much larger, permanently resentful workforce does all the farming, cooking ingredients, and physical labour for them, under duress. That is the deal at the heart of Sparta. The Helots, likely outnumbering their Spartiate masters by something like seven to one, farmed the land and handed over a share of the harvest so that Spartiate men never had to work a paying job in their lives, only train for war.

The catch is obvious: a workforce that outnumbers its masters that heavily, and that never agreed to the arrangement, is a constant risk of uprising. So Sparta built in a security system as extreme as the arrangement itself. Officials declared "war" on the Helots every single year, purely as a legal trick so that killing one was never treated as murder. Specially trained young men were sent out to live wild in the countryside, partly as brutal training, partly, according to some ancient writers, to hunt down and kill Helots who looked too capable or too dangerous. When Sparta finally lost control of its Helot heartland in 370/369 BC, its whole economic and military system collapsed almost overnight, because it had never had a plan B.

The answer

The kleros: Helot labour as the economic base

Spartan citizenship rested on land, not money. Every Spartiate (Homoios) held a kleros, a hereditary land allotment, but he did not farm it himself. Spartiates were forbidden manual labour and trade; farming the kleros was the work of Helots, state-owned serfs bound to the land rather than to an individual owner in the way chattel slaves elsewhere in Greece were owned.

The Helots' produce supported the Spartiate household and, critically, supplied the fixed monthly contribution (grain, wine, oil, and cheese) that each Spartiate owed to his syssition, the compulsory communal mess of around fifteen men. Failure to maintain this contribution meant demotion from the citizen body to the Hypomeiones (Inferiors). The chain of dependence therefore ran directly from Helot labour on the kleros, to syssitia membership, to Spartiate citizenship itself.

The rent tradition: Tyrtaeus and Plutarch

Two ancient traditions describe how much a Helot owed his master, and they do not obviously agree, which is itself historically significant.

The poet Tyrtaeus, active during the Second Messenian War (c. 670-650 BC) and preserved by the later writer Pausanias, describes the newly conquered Messenians as labouring "like asses worn by great burdens," compelled under painful necessity to hand over half of everything their fields produced. This is an image of proportional, oppressive tribute imposed on a defeated people, composed to justify continued Spartan rule and stiffen Spartan resolve rather than to record economic administration neutrally.

Plutarch (Life of Lycurgus 8), writing many centuries later in the Roman imperial period, instead describes a FIXED quantity owed from each kleros, traditionally given as 70 medimnoi of barley for the Spartiate and 12 for his wife, with a proportionate quantity of wine and oil. If accurate for the classical period, a fixed quota (rather than a fixed share) meant a Helot could, in principle, keep any surplus above it, a detail some historians use to soften the picture of unrelenting exploitation.

The contradiction between "half share" and "fixed quota" may reflect real change over time, a genuine difference between the harsher treatment of conquered Messenian Helots and longer-settled Laconian Helots, or simply the unreliability of two sources centuries apart from each other and from the events they describe.

Helot numbers and the fear factor

Ancient sources agree the Helots vastly outnumbered the Spartiates, though precise figures are uncertain. Herodotus (9.10, 9.28-29) records seven Helots accompanying each Spartiate hoplite at Plataea (479 BC), a ratio that, if broadly reliable, implies tens of thousands of Helots serving even in one campaign. Modern estimates of the total Helot population commonly range from around 140,000 to 224,000 against a citizen body that fell from roughly 8,000 (480 BC) to around 1,500-2,000 by Leuctra (371 BC).

Thucydides (4.80), writing as a near-contemporary of the Peloponnesian War, states plainly that Spartan policy "had always been governed by the necessity of taking precautions against" the Helots. In the same passage he records a chilling episode: Sparta invited Helots who believed they had served most bravely in war to come forward for freedom, selected around 2,000, paraded them around the temples crowned with garlands as though liberated, and then made them disappear, "no one being able to say how each of them perished." Whether this refers to one specific incident or is a generalised memory of Spartan practice, ancient and modern writers alike treat it as proof that fear of the Helots shaped Spartan behaviour at the highest level.

Control mechanisms: the ephors' declaration and the krypteia

Sparta's response to this demographic imbalance was institutionalised, permanent surveillance and coercion.

The ephors' annual declaration of war. Plutarch (Life of Lycurgus 28), citing Aristotle, records that the ephors, Sparta's five annually elected magistrates, formally declared war on the Helots on entering office each year. The declaration meant that killing a Helot was never legally murder, removing any need for individual justification or trial.

The krypteia. Young Spartiates nearing the end of the agoge underwent a period in the krypteia, literally the "secret" or "hidden" service. Two ancient accounts describe it very differently, and the difference matters. Plato (Laws 1.633b-c), writing in the fourth century BC, presents it mainly as extreme physical training: young men sent into the countryside without shoes or bedding, forced to forage for their own food day and night, hardening their endurance and stealth. Plutarch (Life of Lycurgus 28), writing centuries later, gives the far darker version most students know: armed only with daggers and basic supplies, the young men hid by day and moved at night, killing any Helots, especially the strongest and most capable, whom they judged dangerous.

The two accounts need not be mutually exclusive; the krypteia may genuinely have combined survival training with a licence to kill, but historians disagree about how much weight to place on Plutarch's grimmer, much later account against Plato's earlier and more neutral one, a disagreement bound up with the wider debate over how constant and severe Spartan "terror" of the Helots really was.

Helots in war

Helots were not confined to farm labour. They served as light-armed attendants to Spartiate hoplites on campaign, in the ratio Herodotus records at Plataea (479 BC). During the Peloponnesian War, after Athens fortified Pylos on the Messenian coast and trapped a Spartan garrison on the nearby island of Sphacteria in 425 BC, capturing around 120 Spartiate hoplites, Spartan anxiety about Helot unrest sharpened dramatically. The following year (424 BC) the general Brasidas took 700 Helots armed as hoplites on campaign to Thrace; those who survived were rewarded with the intermediate status of neodamodeis, freed Helots who went on to form a growing part of Sparta's fighting strength through the fourth century BC. The policy served Sparta twice over: it used Helot manpower against Athens, and it removed potentially dangerous men from the Peloponnese.

The Messenian revolts and the economic collapse

The great revolt of 464 BC was the clearest proof of the Helot danger. A powerful earthquake struck Sparta, killing many Spartiates and damaging the city; Helots, mainly Messenian, and some Perioikoi seized the moment and fortified themselves on Mount Ithome. The siege dragged on for close to a decade. Sparta, unusually, asked Athens for help besieging Ithome; an Athenian force under Cimon arrived (462 BC) but was dismissed, an insult that damaged Athenian-Spartan relations and fed into the breakdown that produced the First Peloponnesian War. The surviving rebels were eventually allowed to leave the Peloponnese under truce and were resettled by Athens at Naupactus.

The final and most decisive blow came after Sparta's defeat at Leuctra (371 BC). The Theban general Epaminondas invaded the Peloponnese and, in 370/369 BC, liberated Messenia outright, founding the fortified city of Messene on the slopes of Mount Ithome as a free Messenian polis. This permanently removed the kleroi and Helot labour force of Messenia, the very foundation on which so many Spartiate households depended for syssitia qualification. Coming on top of decades of oliganthropia and the citizen losses of Leuctra itself, the loss of Messenia was economically as well as militarily terminal: Sparta never again fielded the resources or manpower to dominate the Peloponnese.

How to read a source on this topic

Sources on the Helots come from writers who were never Helots themselves, so every account carries a perspective to weigh.

First, place each source in time relative to the event it describes. Tyrtaeus (c. 670-650 BC) is a near-contemporary of the Second Messenian War, but his verse existed to rally Spartan soldiers, not to record economic conditions objectively. Thucydides (writing during the Peloponnesian War, late fifth century BC) is a careful near-contemporary historian, though as an Athenian he had limited direct access to Sparta's secretive internal affairs, and his account of the 2,000 vanished Helots reads as received report rather than eyewitness testimony. Plutarch (first-second century AD) writes thirty generations after Lycurgus and draws on now-lost earlier sources (including Aristotle's lost Constitution of the Lacedaemonians), which makes him valuable for detail but also prone to repeating dramatic or moralising anecdotes uncritically.

Second, weigh philosophical or political purpose. Plato's Laws uses Sparta selectively, as a model for his own argument about hardship-based education, so his account of the krypteia should not be read as neutral ethnography. Aristotle's Politics analyses Sparta's institutional flaws (including oliganthropia) with the benefit of hindsight after Leuctra, and with his own theoretical agenda about the causes of political decline.

Third, remember the Helot voice itself is almost entirely absent. Every source above was written by, for, or about a non-Helot audience. Modern historians reconstruct Helot experience largely by reading against the grain of hostile or indifferent Spartiate-facing evidence.

Historians on the Helot system

The "class war" reading. G. E. M. de Ste. Croix (The Class Struggle in the Ancient Greek World, 1981) treats Sparta as the starkest case in the Greek world of a society organised around permanent class conflict: the agoge, syssitia, krypteia, and the ephors' annual declaration of war together formed a coherent system for maintaining a small citizen minority's control over a much larger, resentful, unfree population. Paul Cartledge (Sparta and Lakonia, 1979; The Spartans, 2002) broadly supports this reading, arguing that "the Spartan way of life was a response to the conditions of Helot servitude," with the whole militarised social order structured around the Helot threat.

Sceptical readings of permanent terror. Stephen Hodkinson (Property and Wealth in Classical Sparta, 2000) is more cautious, pointing to the fixed-quota kleros tradition in Plutarch (Life of Lycurgus 8) as evidence of a system with room for Helot initiative and surplus, not pure grinding exploitation, and arguing that the darkest picture of institutionalised terror leans heavily on late, moralising sources like Plutarch rather than contemporary evidence. Thomas Figueira's demographic work has questioned whether the ancient population figures behind ratios like "seven Helots to one Spartiate" can support the confident statistics historians sometimes build on them. Michael Whitby cautions that Thucydides's and Plutarch's generalisations about permanent Spartan "precaution against the Helots" may generalise from specific, crisis-driven episodes, most visibly the aftermath of Pylos and Sphacteria in 425 BC, rather than describing a constant, unchanging level of control across the whole classical period.

Model exam responses

1. Source-analysis response (origin/usefulness/reliability). "Source B, an ExamExplained reconstruction of the tradition associated with the poet Tyrtaeus, is useful evidence that the earliest Messenian Helots were remembered as rendering up a proportional share, traditionally half, of their produce under compulsion. Its origin during the Second Messenian War (c. 670-650 BC) makes it valuable as near-contemporary testimony to the conquest and its aftermath. Its reliability is limited, however, because Tyrtaeus composed to rally Spartan soldiers, not to record economic administration neutrally, and it speaks specifically to the newly subjugated Messenians rather than to Helot conditions generally. Corroborated against Plutarch's later claim of a FIXED annual quota (Life of Lycurgus 8), the contrast suggests either genuine change over time or the limits of building economic history from two sources centuries apart."

Marker's note: the markers reward a clear origin/purpose line, BALANCED usefulness and limitation, and corroboration against a second named source rather than mere description of the content.

2. Essay paragraph (control as reactive, not static). "Sparta's control of the Helots was formidable but reactive rather than constant. The ephors' yearly declaration of war and the krypteia gave the appearance of a permanent, unshakeable security system, yet it was precisely when that system was tested that Sparta's anxiety became visible. The 120 Spartiate hoplites lost at Sphacteria in 425 BC sat uncomfortably close to an Athenian garrison planted at Pylos, deep inside Messenian Helot territory. Sparta's response, sending 700 armed Helots away with Brasidas the following year, addressed the immediate danger but also reveals, as Whitby suggests, that the 'permanent' terror apparatus was calibrated to specific crises rather than uniform in intensity across the classical period."

Marker's note: this paragraph scores because it sustains an argument (control was calibrated, not constant), deploys precise dated evidence, and integrates a named historian as part of the reasoning rather than as decoration.

3. Short-answer response (the krypteia's two accounts). "Plato's Laws (1.633b-c) and Plutarch's Life of Lycurgus (28) describe the krypteia very differently, and the gap matters for how we judge Spartan society. Plato, writing closer to the classical period, frames it mainly as endurance training: young men surviving unaided in the countryside. Plutarch, writing centuries later with access to lost earlier sources, adds the killing of Helots judged dangerous, sanctioned by the ephors' annual declaration of war. Historians who favour de Ste Croix's 'class war' reading tend to foreground Plutarch's version; those closer to Hodkinson's scepticism note that Plato's earlier, calmer account should carry real weight too."

Marker's note: markers reward the explicit contrast between the two named sources and their dates, not a single merged retelling of the krypteia.

Common exam traps

Calling Helots chattel slaves. Helots were state-owned serfs bound to the land, not individually owned property; they could marry, have families, and could not be sold away from their kleros.

Treating the "half share" and "fixed quota" traditions as identical. Tyrtaeus's Messenian tradition and Plutarch's fixed-medimnoi tradition are different claims from different periods; naming both, and noting the tension, earns more marks than citing only one.

Confusing the krypteia's two ancient accounts. Plato's endurance-training account and Plutarch's killing-Helots account are not the same source saying the same thing; distinguish them explicitly.

Forgetting the 370/369 BC liberation of Messenia. Students often stop the Helot story at the classical revolts and miss the decisive economic collapse that followed Leuctra, which is the strongest evidence for how much Sparta depended on Helot labour.

Practice questions

Original practice questions graded from foundation to exam level, each with a full worked solution. Try them before revealing the solution.

foundation3 marksOutline how the kleros and Helot labour freed Spartiate men for full-time military training.

Show worked solution →

A 3-mark "outline" needs several correct, sequenced points.

Point 1: the kleros: Each Spartiate held a kleros (land allotment) worked not by himself but by Helots assigned to that land.
Point 2: the produce: The Helots farmed the kleros and rendered up a share of the harvest (grain, wine, oil), which supplied the Spartiate's compulsory monthly contribution to his syssition (military mess).
Point 3: the consequence: Freed from farming, trade, and manual labour (all forbidden to Spartiates), a Spartiate male could give his entire adult life to the agoge and full-time hoplite training, producing Sparta's professional citizen army.

Markers reward the correct causal chain from Helot labour to Spartiate military specialisation.

foundation4 marksSource A (owned reconstruction): an ExamExplained paraphrase, in the manner described by ancient writers, of a Spartan ephor's opening proclamation for the year, declaring a state of war against the Helots of Laconia and Messenia. Using Source A and your own knowledge, explain the purpose of this Spartan practice.

Show worked solution →

A 4-mark "explain" with a source needs the practice identified, its content used, and the purpose reasoned out.

Identify the practice: Plutarch (Life of Lycurgus 28), citing Aristotle, records that the ephors formally declared war on the Helots each year on taking office.
Use the source: Source A reflects this annual ritual: a public declaration made at the start of the ephors' term, addressed at the whole Helot population of both Laconia and Messenia.
Explain the purpose: The declaration gave any killing of a Helot legal cover, since a Helot killed during a "state of war" was not a victim of murder. It formalised the Spartiate assumption that the Helots were a permanent internal enemy, and it authorised the krypteia's activities without individual trial or accountability.

Markers reward identifying Plutarch/Aristotle as the source of the custom and explaining the legal-political function, not just describing the ritual.

core5 marksExplain how the krypteia functioned as both a rite of passage for young Spartiates and an instrument of terror against the Helots.

Show worked solution →

A 5-mark "explain" needs both functions developed with source support.

Rite of passage: Plato (Laws 1.633b-c), writing in the fourth century BC, describes the krypteia mainly as gruelling endurance training for young men completing the agoge: sent into the countryside without shoes or bedding, forced to forage for their own food by day and night, developing stealth, fitness, and self-sufficiency.
Instrument of terror: Plutarch (Life of Lycurgus 28), writing centuries later, gives a darker account: armed only with daggers and basic rations, the young men hid by day and moved by night, killing any Helots, especially the strongest or most capable, whom they judged dangerous.
How the two connect: Both functions operated together: the same exercise that hardened young Spartiates physically also allowed Sparta to remove Helots seen as potential leaders of revolt, backed by the ephors' annual declaration of war so no killing carried legal consequence.
Qualify it: Historians debate whether Plutarch's grimmer version reflects genuine classical practice or later exaggeration of the "otherness" of Sparta; Plato's earlier, more neutral account should be weighed against it.

Markers reward BOTH functions, the named sources for each, and a note on the tension between the two accounts.

core6 marksSource B (owned reconstruction): an ExamExplained paraphrase, composed in the tradition preserved by later writers, of a seventh-century BC poem describing enslaved Messenians as burdened like pack animals, forced to hand over half of everything their fields produced to their Spartiate masters. Assess the usefulness and reliability of Source B for a historian investigating the economic relationship between Spartiates and Helots.

Show worked solution →

A 6-mark source-analysis task needs balanced usefulness AND reliability, anchored in origin/motive/audience.

Origin, motive, audience: Source B reflects the tradition associated with the poet Tyrtaeus, active during the Second Messenian War (c. 670-650 BC), whose verse was composed to rally Spartan soldiers rather than to record economic data dispassionately.
Usefulness: The source is genuinely useful as near-contemporary evidence that the earliest Messenian Helots were seen, at least by their conquerors, as rendering up a proportional share (traditionally "half") of their produce, and that this was remembered as a condition of conquest and humiliation, not a negotiated tenancy.
Reliability: Reliability is limited because the poem's purpose was to justify Spartan rule and stiffen Spartan resolve, not to describe economic administration accurately, and it speaks specifically to the newly conquered Messenians rather than to Helot conditions generally or in later centuries. It should be weighed against Plutarch's much later claim (Life of Lycurgus 8) that each kleros in fact owed the Spartiate household a FIXED quantity of produce, which, if accurate for the classical period, would let a Helot keep any surplus above the quota.
Corroborate/qualify: The apparent contradiction (a "half share" tradition versus a "fixed quota" tradition) may reflect change over time, or a real difference between the harsher treatment of conquered Messenian Helots and Laconian Helots, or simply the unreliability of both idealised, centuries-apart sources.

Markers reward origin/motive analysis, BALANCED usefulness and limitation, and use of the Tyrtaeus/Plutarch contrast as evidence, not just description.

core5 marksExplain the economic consequences for Sparta of the liberation of Messenia in 370/369 BC.

Show worked solution →

A 5-mark "explain" needs the event, the mechanism of loss, and the consequence.

The event: Following Sparta's defeat at Leuctra (371 BC), the Theban general Epaminondas invaded the Peloponnese and, in 370/369 BC, liberated Messenia, founding the fortified city of Messene as a free polis for the former Messenian Helots.
The mechanism of loss: Messenia had supplied a large share of the kleroi and their Helot labour force that fed the syssitia system underpinning Spartiate citizenship. Its permanent removal meant many Spartiate families lost the produce that qualified them to remain Homoioi.
The consequence: Combined with the already critical decline in Spartiate numbers (oliganthropia, worsened by casualties at Leuctra), the loss of Messenia was economically as well as militarily terminal: Sparta never again fielded the manpower or resources to reassert Peloponnesian dominance.

Markers reward the causal chain from land loss to citizenship qualification to permanent military decline.

exam8 marksUsing your knowledge of the events of 425-424 BC, explain why Spartan fear of Helot revolt intensified in this period.

Show worked solution →

An 8-mark "explain" at exam level needs a developed, dated causal argument.

The trigger: Pylos and Sphacteria (425 BC): During the Peloponnesian War, an Athenian force fortified Pylos on the Messenian coast, deep in Helot territory, and later trapped a Spartan garrison on the nearby island of Sphacteria. About 120 Spartiate hoplites, a significant fraction of the whole citizen body, surrendered to Athens.
Why this frightened Sparta: An Athenian base at Pylos offered a permanent refuge for Helot deserters right inside Messenia, and the loss of so many Spartiates sharpened the demographic anxiety (oliganthropia) that already worried Spartan leaders. Thucydides (4.80) records that Spartan policy "had always been governed by the necessity of taking precautions against [the Helots]," and it is in this context that he recalls an earlier episode in which around 2,000 Helots who had been promised freedom for war service instead disappeared, "no one being able to say how."
The response (424 BC): Sparta sent 700 armed Helots as hoplites with the general Brasidas to campaign in Thrace, later rewarding survivors with the status of neodamodeis (freed Helots). This served two purposes at once: it used Helot manpower against Athens and removed a body of newly militarised, potentially dangerous men far from the Peloponnese.

Markers reward the dated sequence (Pylos/Sphacteria 425 BC to the Brasidas campaign 424 BC), the Thucydides 4.80 citation, and the explicit "double purpose" reasoning behind the neodamodeis policy.

exam25 marksESSAY. To what extent did the Helot economy and the Spartan system for controlling the Helots both sustain and threaten the Spartan state?

Show worked solution →

A band-6 essay sustains a judgement on "to what extent," marshals specific dated evidence, and weaves historiography. This is a PLAN plus a model paragraph.

Thesis: The Helot economy was the load-bearing structure of the entire Spartan way of life, freeing Spartiate men for exclusive military specialisation, but that same dependence generated a permanent structural vulnerability that Sparta's control mechanisms, the krypteia and the ephors' annual declaration of war, contained without ever resolving; the final proof is that removing the Helot economy in 370/369 BC ended Sparta as a great power almost immediately.
Argument line 1: the sustaining economy: The kleros, worked by Helots, produced the fixed contribution (Plutarch, Life of Lycurgus 8, gives figures of 70 medimnoi of barley for the Spartiate and 12 for his wife, plus oil and wine) that qualified a man for syssitia membership and hence citizenship. This freed Spartiates from the agriculture, trade, and craft performed elsewhere by the Perioikoi, allowing full-time devotion to the agoge and hoplite training from age seven.
Argument line 2: the scale of the threat: Herodotus (9.10, 9.28-29) records around seven Helots accompanying each Spartiate hoplite at Plataea (479 BC), implying a Helot population vastly outnumbering the Spartiates, a ratio ancient and modern writers alike treated as dangerous. Tyrtaeus's near-contemporary verse (composed during the Second Messenian War, c. 670-650 BC) describes the conquered Messenians labouring "like asses worn by great burdens," rendering up half their produce under compulsion, a resentment that erupted in the great revolt of 464 BC following Sparta's earthquake, when Helots and Perioikoi fortified Mount Ithome for close to a decade.
Argument line 3: control and its limits: The ephors' annual declaration of war (Plutarch, Life of Lycurgus 28, citing Aristotle) and the krypteia gave Sparta a permanent internal-security apparatus. The events of 425-424 BC show its limits: the capture of Spartiates at Sphacteria (425 BC) so alarmed Sparta that it exported the risk, sending 700 armed Helots to Thrace under Brasidas (424 BC) as future neodamodeis, and Thucydides (4.80) preserves the darker precedent of roughly 2,000 supposedly "freed" Helots who vanished without explanation.
Argument line 4: the proof by removal: When Epaminondas liberated Messenia in 370/369 BC after Leuctra, founding Messene, Sparta lost the productive base of its whole system exactly when Spartiate numbers, already reduced by oliganthropia, were most fragile. Sparta never recovered great-power status, confirming how completely its order had depended on Helot labour.
Historiography: De Ste. Croix (1981) reads the Spartan apparatus as a permanent system of class warfare over a resentful, outnumbering population. Cartledge (1979) agrees that "the Spartan way of life was a response to the conditions of Helot servitude." Hodkinson (2000) is more sceptical, arguing Plutarch's fixed-quota kleros implies incentive, not pure exploitation, and that "permanent terror" leans on later, moralising sources. Figueira questions whether population estimates behind "seven to one" bear the weight placed on them; Whitby cautions that Thucydides and Plutarch may generalise a crisis-driven response, visible after Pylos in 425 BC, into unchanging terror.
Model paragraph (argument line 3): Sparta's control of the Helots was formidable but reactive, not static. The ephors' yearly declaration and the krypteia's covert killings suggested a permanent, unshakeable system, yet it was precisely when tested that Sparta's anxiety showed. The 120 Spartiates lost at Sphacteria in 425 BC, a serious blow given the shrinking citizen body, sat close to an Athenian garrison at Pylos, deep in Messenian Helot territory. Sending 700 armed Helots away with Brasidas the following year addressed the immediate danger but also reveals, as Whitby suggests, that the "permanent" apparatus was calibrated to specific crises rather than constant in intensity. Thucydides's aside that Spartan policy "had always been governed by the necessity of taking precautions against" the Helots reads best as a judgement drawn from moments exactly like this one, not proof of an unvarying daily terror.
Conclusion: The Helot economy built Sparta's militarised society, and Spartan control managed, but never eliminated, the danger that dependence created. Judgement sustained: the system that made Sparta was the system that, once stripped of its economic base in 370/369 BC, unmade it.

Marker's note: band 6 answers commit to a sustained "to what extent" judgement, integrate precise dated evidence across the whole period, and treat at least two named historians as argument, weighing the "class war" reading against the more sceptical accounts, rather than simply listing quotations.