CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended
	Aug. 31, 2020	Aug. 31, 2019
Income Statement [Abstract]
Revenues	$ 215.2	$ 232.6
Operating costs and expenses:
Cost of goods sold	123.2	137.1
Selling, general and administrative expenses	121.5	163.1
Depreciation and amortization	15.5	15.4
Severance	12.0	4.4
Total operating costs and expenses	272.2	320.0
Operating income (loss)	(57.0)	(87.4)
Interest income (expense), net	(1.2)	0.7
Other components of net periodic benefit (cost)	(0.2)	(0.4)
Gain (loss) on sale of assets and other	6.6	0.0
Earnings (loss) before income taxes	(51.8)	(87.1)
Provision (benefit) for income taxes	(12.0)	(28.6)
Net income (loss)	(39.8)	(58.5)
Less: Net income (loss) attributable to noncontrolling interest	0.0	0.0
Net income (loss) attributable to Scholastic Corporation	$ (39.8)	$ (58.5)
Basic and diluted earnings (loss) per Share of Class A and Common Stock
Basic (in Dollars per share)	$ (1.16)	$ (1.68)
Diluted (in Dollars per share)	$ (1.16)	$ (1.68)