Earnings (Loss) Per Share - Narrative (Details) - USD ($) $ in Millions	May 31, 2024	May 31, 2023	May 31, 2022
Earnings Per Share [Abstract]
Number of potentially antidilutive shares outstanding	900,000	600,000	1,600,000
Remaining Board authorization at May 31, 2024	$ 86.6

Share-based Compensation Arrangement by Share-based Payment Award, Antidilutive Securities Outstanding, Amount

No definition available.

Name:	schl_SharebasedCompensationArrangementbySharebasedPaymentAwardAntidilutiveSecuritiesOutstandingAmount
Namespace Prefix:	schl_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant