Summary of Significant Accounting Policies - Capitalized Software-as-a-Service Costs (Details) - USD ($)	12 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2022
Property and equipment, net
Capitalized software, net	$ 75,314,000	$ 81,952,000
Capitalized software written down		0	$ 0	$ 0
Capitalized computer software as service
Property and equipment, net
Capitalized software written down	0	0	0
Capitalized computer software as service | Instructional costs and services
Property and equipment, net
Amortization expense	3,400,000	0	0
Capitalized computer software as service | Selling, general and administrative expenses
Property and equipment, net
Amortization expense	16,000,000	15,800,000	$ 9,200,000
Capitalized computer software as service | Prepaid expenses
Property and equipment, net
Capitalized software, net	17,500,000	13,300,000
Capitalized computer software as service | Deposits and other assets
Property and equipment, net
Capitalized software, net	$ 43,300,000	$ 44,100,000
Minimum | Capitalized computer software as service
Property and equipment, net
Capitalized software as service useful life	3 years
Maximum | Capitalized computer software as service
Property and equipment, net
Capitalized software as service useful life	5 years