Capital Stock and Stock-Based Awards (Details) - Schedule of RSU activity (USD $)	12 Months Ended
May 31, 2013	May 31, 2012	May 31, 2011
Schedule of RSU activity [Abstract]
RSUs granted	125,584	205,620	141,600
Weighted average grant date price per unit (in Dollars per share)	$ 23.05	$ 27.92	$ 25.03

Weighted average grant date price of restricted stock units under the plan.

No definition available.

Name:	schl_ShareBasedCompensationArrangementByShareBasedPaymentAwardRestrictedStockUnitsWeightedAverageGrantDatePrices
Namespace Prefix:	schl_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	duration