Document And Entity Information	3 Months Ended
	Aug. 31, 2017 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	Aug. 31, 2017
Document Fiscal Year Focus	2018
Document Fiscal Period Focus	Q1
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	33,358,951