The following table provides the gross carrying value, accumulated amortization, net book value and remaining useful life for those intangible assets that are subject to amortization as of June 30, 2026:


	Gross Carrying Value		Accumulated Amortization		Net Book Value		Weighted Average Remaining Useful Life (Years)
Internally developed software	$	13,461	$	(11,617)	$	1,844	3.71
Internally developed curriculum	6,459		(3,686)		2,773		3.43
Trademarks, trade names and other	1,942		(1,621)		321		6.42
Acquired curriculum	1,800		(1,377)		423		1.35
Intangible assets subject to amortization	23,662		(18,301)		5,361		3.69
Accreditations and regulatory approvals	16,300		—		16,300		Indefinite
Development in progress	3,874		—		3,874		—
Total	$	43,836	$	(18,301)	$	25,535	3.69


	Gross Carrying Value		Accumulated Amortization		Net Book Value		Weighted Average Remaining Useful Life (Years)
Trademarks, trade names and other	$	1,942	$	(1,583)	$	359	7.17
Acquired curriculum	1,800		(1,107)		693		2.03


Intangible assets subject to amortization	3,742		(2,690)		1,052		3.78
Accreditations and regulatory approvals	16,300		—		16,300		Indefinite

Total	$	20,042	$	(2,690)	$	17,352	3.78

Amortization expense was $0.4 million and $1.3 million for the three and nine months ended June 30, 2026, and $0.2 million and $0.7 million for the three and nine months ended June 30, 2025.

The remaining weighted average useful lives shown are calculated based on the net book value and remaining amortization period of each respective intangible asset. Amortization is computed using the straight-line method based on estimated useful lives of the related assets. Our indefinite-lived intangible assets are reviewed at least annually for impairment as of August 1, or more frequently if there are indicators of impairment. There were no indicators of impairment for our indefinite-lived intangible assets as of June 30, 2026.