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Goodwill and Other Intangibles (Details) (USD $)
In Millions, unless otherwise specified
 9 Months Ended 12 Months Ended
Feb. 28, 2015
Feb. 28, 2014
May 31, 2014
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill, Impairment Loss $ 0us-gaap_GoodwillImpairmentLoss $ 13.4us-gaap_GoodwillImpairmentLoss $ 13.4us-gaap_GoodwillImpairmentLoss
Finite-Lived Intangible Asset, Useful Life 6 years 6 months 6 days    
Finite-Lived Intangible Assets      
Goodwill and Other Intangibles (Details) [Line Items]      
Amortization of Intangible Assets 1.7us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember		 1.8us-gaap_AmortizationOfIntangibleAssets
/ us-gaap_FairValueByAssetClassAxis
= us-gaap_FiniteLivedIntangibleAssetsMember		  
Children's Book Publishing and Distribution      
Goodwill and Other Intangibles (Details) [Line Items]      
Goodwill, Impairment Loss   $ 0us-gaap_GoodwillImpairmentLoss
/ us-gaap_StatementBusinessSegmentsAxis
= schl_ChildrensBookPublishingAndDistributionMember