CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY Statement - USD ($) shares in Thousands, $ in Millions	Total	Common Class	Common Class Common Class A	Common Class Common Class	Additional Paid-in Capital	Accumulated Other Comprehensive Income (Loss)	Retained Earnings	Treasury Stock At Cost	Total Stockholders' Equity of Scholastic Corporation	Noncontrolling Interest
Beginning balance at May. 31, 2023	$ 1,164.5	$ 0.4	$ 0.0		$ 632.2	$ (55.8)	$ 1,035.6	$ (449.5)	$ 1,162.9	$ 1.6
Balance (in shares) at Aug. 31, 2023		29,300	1,700
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(74.2)						(74.2)		(74.2)
Foreign currency translation adjustments	1.8					1.8			1.8
Pension and post-retirement adjustments (net of tax of $0.0)	0.2					0.2			0.2
Stock-based compensation	2.3				2.3				2.3
Proceeds pursuant to stock-based compensation plans	3.0				3.0				3.0
Purchases of treasury stock at cost (in shares)		(800)
Purchases of treasury stock at cost	(36.2)							(36.2)	(36.2)
Treasury stock issued pursuant to equity-based plans (in shares)		100
Treasury stock issued pursuant to equity-based plans	1.6				(4.3)			5.9	1.6
Dividends	(6.3)						(6.3)		(6.3)
Other (noncontrolling interest)	(2.1)				(0.5)				(0.5)	(1.6)
Ending Balance at Aug. 31, 2023	1,054.6	$ 0.4	$ 0.0		632.7	(53.8)	955.1	(479.8)	1,054.6	0.0
Balance (in shares) at May. 31, 2023		30,000	1,700
Beginning balance at May. 31, 2023	1,164.5	$ 0.4	$ 0.0		632.2	(55.8)	1,035.6	(449.5)	1,162.9	1.6
Balance (in shares) at Feb. 29, 2024		27,800	800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(23.8)
Foreign currency translation adjustments	1.6
Ending Balance at Feb. 29, 2024	997.6	$ 0.4	$ 0.0		603.0	(53.7)	993.5	(545.6)	997.6	0.0
Balance (in shares) at May. 31, 2023		30,000	1,700
Beginning balance at Aug. 31, 2023	1,054.6	$ 0.4	$ 0.0		632.7	(53.8)	955.1	(479.8)	1,054.6	0.0
Balance (in shares) at Nov. 30, 2023		28,200	1,700
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	76.9						76.9		76.9
Foreign currency translation adjustments	0.2					0.2			0.2
Pension and post-retirement adjustments (net of tax of $0.0)	0.1					0.1			0.1
Stock-based compensation	4.1				4.1				4.1
Proceeds pursuant to stock-based compensation plans	0.6				0.6				0.6
Purchases of treasury stock at cost (in shares)		(1,400)
Purchases of treasury stock at cost	(52.3)							(52.3)	(52.3)
Treasury stock issued pursuant to equity-based plans (in shares)		300
Treasury stock issued pursuant to equity-based plans	0.9				(6.6)			7.5	0.9
Dividends	(6.0)						(6.0)		(6.0)
Ending Balance at Nov. 30, 2023	1,079.1	$ 0.4	$ 0.0		630.8	(53.5)	1,026.0	(524.6)	1,079.1	0.0
Balance (in shares) at Aug. 31, 2023		29,300	1,700
Balance (in shares) at Feb. 29, 2024		27,800	800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(26.5)						(26.5)		(26.5)
Foreign currency translation adjustments	(0.4)					(0.4)			(0.4)
Pension and post-retirement adjustments (net of tax of $0.0)	(0.2)					(0.2)			(0.2)
Stock-based compensation	2.3				2.3				2.3
Proceeds pursuant to stock-based compensation plans	2.5				2.5				2.5
Purchases of treasury stock at cost (in shares)		(1,400)
Purchases of treasury stock at cost	(54.2)							(54.2)	(54.2)
Treasury stock issued pursuant to equity-based plans (in shares)		100
Treasury stock issued pursuant to equity-based plans	0.6				(4.0)			4.6	0.6
Dividends	(6.0)						(6.0)		(6.0)
Other (noncontrolling interest)	0.0				(28.6)			28.6
Other (noncontrolling interest) (in shares)			(900)	900
Ending Balance at Feb. 29, 2024	997.6	$ 0.4	$ 0.0		603.0	(53.7)	993.5	(545.6)	997.6	0.0
Balance (in shares) at Nov. 30, 2023		28,200	1,700
Beginning balance at May. 31, 2024	1,018.1	$ 0.4	$ 0.0		604.6	(52.5)	1,023.7	(558.1)	1,018.1	0.0
Balance (in shares) at Aug. 31, 2024		27,300	800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(62.5)						(62.5)		(62.5)
Foreign currency translation adjustments	8.2					8.2			8.2
Pension and post-retirement adjustments (net of tax of $0.0)	0.2					0.2			0.2
Stock-based compensation	2.2				2.2				2.2
Proceeds pursuant to stock-based compensation plans	0.1				0.1				0.1
Purchases of treasury stock at cost (in shares)		(200)
Purchases of treasury stock at cost	(5.0)							(5.0)	(5.0)
Treasury stock issued pursuant to equity-based plans (in shares)		100
Treasury stock issued pursuant to equity-based plans	1.6				(0.6)			2.2	1.6
Dividends	(5.6)						(5.6)		(5.6)
Ending Balance at Aug. 31, 2024	957.3	$ 0.4	$ 0.0		606.3	(44.1)	955.6	(560.9)	957.3	0.0
Balance (in shares) at May. 31, 2024		27,400	800
Beginning balance at May. 31, 2024	1,018.1	$ 0.4	$ 0.0		604.6	(52.5)	1,023.7	(558.1)	1,018.1	0.0
Balance (in shares) at Feb. 28, 2025		25,900	800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(17.3)
Foreign currency translation adjustments	(11.7)
Purchases of treasury stock at cost	(40.6)
Ending Balance at Feb. 28, 2025	941.3	$ 0.4	$ 0.0		605.3	(63.7)	989.5	(590.2)	941.3	0.0
Balance (in shares) at May. 31, 2024		27,400	800
Beginning balance at Aug. 31, 2024	957.3	$ 0.4	$ 0.0		606.3	(44.1)	955.6	(560.9)	957.3	0.0
Balance (in shares) at Nov. 30, 2024		27,300	800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	48.8						48.8		48.8
Foreign currency translation adjustments	(11.9)					(11.9)			(11.9)
Pension and post-retirement adjustments (net of tax of $0.0)	0.2					0.2			0.2
Stock-based compensation	2.1				2.1				2.1
Proceeds pursuant to stock-based compensation plans	(0.5)				(0.5)				(0.5)
Purchases of treasury stock at cost (in shares)		(100)
Purchases of treasury stock at cost	(5.0)							(5.0)	(5.0)
Treasury stock issued pursuant to equity-based plans (in shares)		100
Treasury stock issued pursuant to equity-based plans	0.7				(4.4)			5.1	0.7
Dividends	(5.7)						(5.7)		(5.7)
Ending Balance at Nov. 30, 2024	986.0	$ 0.4	$ 0.0		603.5	(55.8)	998.7	(560.8)	986.0	0.0
Balance (in shares) at Aug. 31, 2024		27,300	800
Balance (in shares) at Feb. 28, 2025		25,900	800
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(3.6)						(3.6)		(3.6)
Foreign currency translation adjustments	(8.0)					(8.0)			(8.0)
Pension and post-retirement adjustments (net of tax of $0.0)	(0.1)					(0.1)			(0.1)
Stock-based compensation	2.4				2.4				2.4
Proceeds pursuant to stock-based compensation plans	0.1				0.1				0.1
Purchases of treasury stock at cost (in shares)		(1,500)
Purchases of treasury stock at cost	(30.6)							(30.6)	(30.6)
Treasury stock issued pursuant to equity-based plans (in shares)		100
Treasury stock issued pursuant to equity-based plans	0.5				(0.7)			1.2	0.5
Dividends	(5.6)						(5.6)		(5.6)
Ending Balance at Feb. 28, 2025	$ 941.3	$ 0.4	$ 0.0		$ 605.3	$ (63.7)	$ 989.5	$ (590.2)	$ 941.3	$ 0.0
Balance (in shares) at Nov. 30, 2024		27,300	800