XML 128 R113.htm IDEA: XBRL DOCUMENT
v3.26.1

Capital Stock and Stock-Based Awards - Narrative (Details) |  |  |  |  |  | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Sep. 17, 2024 shares | Jul. 19, 2023 USD ($) | Jul. 21, 2021 | Sep. 26, 2018 shares | Sep. 24, 2014 shares | May 31, 2026 USD ($) installment $ / shares shares | May 31, 2025 USD ($) shares | May 31, 2024 USD ($) shares | Sep. 16, 2025 shares | Sep. 21, 2021 shares | Sep. 30, 2017 shares | Sep. 21, 2011 shares
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Preferred stock issued (in shares) |  |  |  |  |  | 0 | 0 |  |  |  |  |
Options outstanding ( in shares) |  |  |  |  |  | 1,756,685 | 2,663,798 |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  | 18,092 |  |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  |  |  |  | $ 21.38 |  |  |  |  |  |
Minimum period before grants exercisable |  |  |  |  |  | 1 year |  |  |  |  |  |
Award vesting period |  |  |  |  |  | 4 years |  |  |  |  |  |
Minimum |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Expiration of stock options |  |  |  |  |  | 7 years |  |  |  |  |  |
Maximum |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Expiration of stock options |  |  |  |  |  | 10 years |  |  |  |  |  |
Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock option compensation cost not yet recognized | $ |  |  |  |  |  | $ 6,700,000 |  |  |  |  |  |
Future period of stock option expense recognition (in years) |  |  |  |  |  | 1 year 7 months 6 days |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 413,736 | 410,392 | 177,867 |  |  |  |
Conversion ratio (in shares) |  |  |  |  |  | 1 |  |  |  |  |  |
Restricted Stock Units (RSUs) | Minimum |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting installments | installment |  |  |  |  |  | 3 |  |  |  |  |  |
Restricted Stock Units (RSUs) | Maximum |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Vesting installments | installment |  |  |  |  |  | 4 |  |  |  |  |  |
Employee Stock |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Increase in shares available for grant (in shares) | 500,000 |  |  |  |  |  |  |  |  |  |  |
Common stock remaining authorized (in shares) |  |  |  |  |  | 371,625 |  |  |  |  |  |
Quarterly basis discount rate of common stock on closing price |  |  |  |  |  | 15.00% |  |  |  |  |  |
Employee Stock Option |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock option compensation cost not yet recognized | $ |  |  |  |  |  | $ 100,000 |  |  |  |  |  |
Future period of stock option expense recognition (in years) |  |  |  |  |  | 4 months 24 days |  |  |  |  |  |
Management Stock Purchase Plan |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Stock option compensation cost not yet recognized | $ |  |  |  |  |  | $ 0 |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 7,990 | 7,250 | 15,149 |  |  |  |
Plan 2021 |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total number of shares available for grant (in shares) |  |  |  |  |  |  |  |  |  | 2,500,000 |  |
Options outstanding ( in shares) |  |  |  |  |  | 650,583 |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross |  |  |  |  |  | 18,092 |  |  |  |  |  |
Granted (in dollars per share) | $ / shares |  |  |  |  |  | $ 21.38 |  |  |  |  |  |
Common stock remaining authorized (in shares) |  |  |  |  |  | 765,527 |  |  |  |  |  |
Plan 2021 | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 371,416 |  |  |  |  |  |
Plan 2021 | Stock Units And Restricted Stock Units |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Shares issued during period from award (in shares) |  |  |  |  |  | 184,685 |  |  |  |  |  |
Plan 2011 |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Total number of shares available for grant (in shares) |  |  |  | 7,115,000 |  |  |  |  |  |  |  | 2,100,000
Increase in shares available for grant (in shares) |  |  |  | 2,540,000 | 2,475,000 |  |  |  |  |  |  |
Options outstanding ( in shares) |  |  |  |  |  | 953,508 |  |  |  |  |  |
Directors Plan 2017 |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding ( in shares) |  |  |  |  |  | 144,146 |  |  |  |  |  |
Common stock remaining authorized (in shares) |  |  |  |  |  | 154,574 |  |  |  |  |  |
Shares reserved for issuance (in shares) |  |  |  |  |  |  |  |  |  |  | 400,000 |
Value of stock options and restricted stock units granted | $ |  | $ 125,000 |  |  |  |  |  |  |  |  |  |
Restricted stock outstanding (in shares) |  |  |  |  |  | 42,320 |  |  |  |  |  |
Directors Plan 2017 | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, shares authorized (in shares) |  |  |  |  |  |  |  |  | 100,000 |  |  |
Stock allocation of awards as a percent |  |  | 100.00% |  |  |  |  |  |  |  |  |
Shares issued during period from award (in shares) |  |  |  |  |  | 28,280 |  |  |  |  |  |
2007 Directors’ Plan |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Options outstanding ( in shares) |  |  |  |  |  | 8,448 |  |  |  |  |  |
Management Stock Purchase Plan | Restricted Stock Units (RSUs) |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, shares authorized (in shares) |  |  |  |  |  |  |  |  | 100,000 |  |  |
Common stock remaining authorized (in shares) |  |  |  |  |  | 197,520 |  |  |  |  |  |
Shares issued during period from award (in shares) |  |  |  |  |  | 52,252 |  |  |  |  |  |
Granted (in shares) |  |  |  |  |  | 421,726 |  |  |  |  |  |
Conversion ratio (in shares) |  |  |  |  |  | 1 |  |  |  |  |  |
Deferred rate for annual cash bonus payment |  |  |  |  |  | 100.00% |  |  |  |  |  |
Quarterly basis discount rate of common stock on closing price |  |  |  |  |  | 25.00% |  |  |  |  |  |
Minimum deferral period |  |  |  |  |  | 3 years |  |  |  |  |  |
Fair value of shares vested | $ |  |  |  |  |  | $ 8.3 | $ 6,500,000 | $ 5,800,000 |  |  |  |
Class A Stock |  |  |  |  |  |  |  |  |  |  |  |
Capital Stock and Stock-Based Awards (Details) - Schedule of Stock Unit and Restricted Stock Unit activity [Line Items] |  |  |  |  |  |  |  |  |  |  |  |
Common Stock, shares outstanding (in shares) |  |  |  |  |  | 828,100 | 828,100 | 828,100 |  |  |  |
Common Stock, shares authorized (in shares) |  |  |  |  |  | 3,171,900 | 3,171,900 | 3,171,900 |  |  |  |
Common stock, shares, surrendered (in shares) |  |  |  |  |  |  |  | 828,100 |  |  |  |

X
- References No definition available. + Details
Name: | schl_CapitalStockAndStockBasedAwardsDetailsScheduleOfStockUnitAndRestrictedStockUnitActivity1LineItems
Namespace Prefix: | schl_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Common Stock, Shares, Surrendered + References No definition available. + Details
Name: | schl_CommonStockSharesSurrendered
Namespace Prefix: | schl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Deferred Compensation Arrangement with Individual, Stock Allocation Percentage + References No definition available. + Details
Name: | schl_DeferredCompensationArrangementwithIndividualStockAllocationPercentage
Namespace Prefix: | schl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Rate at which annual cash bonus payments are deferred by the entity. + References No definition available. + Details
Name: | schl_DeferredRateForAnnualCashBonusPayment
Namespace Prefix: | schl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Discount rate of common stock on closing price. + References No definition available. + Details
Name: | schl_QuarterlyBasisDiscountRateOfCommonStockOnClosingPrice
Namespace Prefix: | schl_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-Based Compensation Arrangement by Share-Based Payment Award, Conversion Ratio + References No definition available. + Details
Name: | schl_ShareBasedCompensationArrangementByShareBasedPaymentAwardConversionRatio
Namespace Prefix: | schl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-Based Compensation Arrangement By Share-Based Payment Award, Minimum Period After Grant, Exercisable + References No definition available. + Details
Name: | schl_ShareBasedCompensationArrangementByShareBasedPaymentAwardMinimumPeriodAfterGrantExercisable
Namespace Prefix: | schl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of restricted units. + References No definition available. + Details
Name: | schl_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnits
Namespace Prefix: | schl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Share-Based Compensation Arrangement by Share-Based Payment Award, Vesting Installments + References No definition available. + Details
Name: | schl_ShareBasedCompensationArrangementByShareBasedPaymentAwardVestingInstallments
Namespace Prefix: | schl_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Share-Based Compensation By Share-Based Payment Arrangement, Minimum Deferral Period + References No definition available. + Details
Name: | schl_ShareBasedCompensationByShareBasedPaymentArrangementMinimumDeferralPeriod
Namespace Prefix: | schl_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The maximum number of common shares permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 + Details
Name: | us-gaap_CommonStockSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -SubTopic 10 -Topic 505 -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.6-05(4)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-2 Reference 4: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(4)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 946 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04(16)(a)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479170/946-210-S99-1 Reference 6: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 946 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 3 -Subparagraph (SX 210.6-09(7)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479134/946-220-S99-3 + Details
Name: | us-gaap_CommonStockSharesOutstanding
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The maximum number of shares authorized for issuance under the deferred compensation arrangement as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_DeferredCompensationArrangementWithIndividualSharesAuthorizedForIssuance
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 505 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481112/505-10-50-13 + Details
Name: | us-gaap_PreferredStockSharesIssued
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingPeriod1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of additional shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-4 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfAdditionalSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of shares authorized for issuance under share-based payment arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAuthorized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardNumberOfSharesAvailableForGrant
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Gross number of share options (or share units) granted during the period. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Number of options outstanding, including both vested and non-vested options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(ii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of shares issued under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(01) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:perShareItemType
Balance Type: | na
Period Type: | duration

X
- Definition Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
Name: | us-gaap_SharebasedCompensationArrangementBySharebasedPaymentAwardExpirationPeriod
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition Value, before forfeiture, of shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 35 -Paragraph 2 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480483/718-10-35-2 + Details
Name: | us-gaap_StockGrantedDuringPeriodValueSharebasedCompensationGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_RestrictedStockUnitsRSUMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=us-gaap_EmployeeStockOptionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=schl_ManagementStockPurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=schl_Plan2021Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_AwardTypeAxis=schl_StockUnitsAndRestrictedStockUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=schl_Plan2011Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=schl_DirectorsPlan2017Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=schl_DirectorsPlan2007Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PlanNameAxis=schl_ManagementStockPurchasePlanMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |