Document And Entity Information	9 Months Ended
	Feb. 28, 2018 shares
Document Information [Line Items]
Entity Registrant Name	SCHOLASTIC CORP
Document Type	10-Q
Current Fiscal Year End Date	--05-31
Amendment Flag	false
Entity Central Index Key	0000866729
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Large Accelerated Filer
Entity Well-known Seasoned Issuer	Yes
Document Period End Date	Feb. 28, 2018
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q3
Common Class A
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	1,656,200
Common Stock
Document Information [Line Items]
Entity Common Stock, Shares Outstanding	33,078,234