CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Nov. 30, 2025	Nov. 30, 2024	Nov. 30, 2025	Nov. 30, 2024
Income Statement [Abstract]
Revenues	$ 551.1	$ 544.6	$ 776.7	$ 781.8
Operating costs and expenses:
Cost of goods sold	225.6	228.6	349.1	356.9
Selling, general and administrative expenses	217.5	224.9	394.7	407.0
Depreciation and amortization	16.5	16.3	32.8	31.6
Asset impairments and write downs	8.6	0.1	9.4	0.1
Total operating costs and expenses	468.2	469.9	786.0	795.6
Operating income (loss)	82.9	74.7	(9.3)	(13.8)
Interest income (expense), net	(5.0)	(4.4)	(9.5)	(7.4)
Other components of net periodic benefit (cost)	(0.4)	(0.3)	(0.7)	(0.6)
Other non-operating income (expense)	(1.6)	0.0	(1.6)	0.0
Earnings (loss) before income taxes	75.9	70.0	(21.1)	(21.8)
Provision (benefit) for income taxes	20.0	21.2	(5.9)	(8.1)
Net income (loss)	$ 55.9	$ 48.8	(15.2)	(13.7)
Net income (loss) attributable to Scholastic Corporation			$ (15.2)	$ (13.7)
Basic and diluted earnings (loss) per share of Class A and Common Stock
Basic (in Dollars per share)	$ 2.21	$ 1.73	$ (0.60)	$ (0.48)
Diluted (in Dollars per share)	$ 2.17	$ 1.71	$ (0.60)	$ (0.48)