Percentage of effective income tax rate reconciliation, withholding.

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Represents the minimum amount of underpayment of tax liability considered as a special circumstance under the statute of limitations.

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- Definition

Represent the percentage of income taxes foreign statutory corporate tier one tax rate.

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No definition available.

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Represent the percentage of income taxes foreign statutory corporate tier one tax rate.

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No definition available.

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Preferential tax rate

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No definition available.

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Represent the amount of taxable income under tier one tax rate.

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No definition available.

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Amount of deferred tax assets for which it is more likely than not that a tax benefit will not be realized.

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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The portion of earnings or loss from continuing operations before income taxes that is attributable to foreign operations, which is defined as Income or Loss generated from operations located outside the entity's country of domicile.

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Amount recognized for uncertainty in income taxes classified as current.

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Amount of operating loss carryforward, before tax effects, available to reduce future taxable income under enacted tax laws.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The earnings that is allocated to common stock and participating securities to the extent that each security may share in earnings as if all of the earnings for the period had been distributed.

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Amount of unrecognized tax benefits.

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INCOME TAXES - Additional information (Details) $ in Thousands, ¥ in Millions, $ in Millions	12 Months Ended						36 Months Ended	48 Months Ended	72 Months Ended
	Dec. 31, 2026	Feb. 28, 2026 HKD ($)	Feb. 28, 2026 USD ($)	Feb. 28, 2026 CNY (¥)	Feb. 28, 2025 USD ($)	Feb. 29, 2024 USD ($)	Dec. 31, 2026	Dec. 31, 2026	Dec. 31, 2025
Income taxes
Income tax rate (as a percent)		22.50%	22.50%	22.50%
Deferred tax assets, valuation allowance			$ 570,727		$ 512,788
Uncertain tax positions			0		$ 0	$ 0
Unrecognized tax benefits			$ 0
Statute of limitation will be extended to five years under special circumstances \| ¥				¥ 0.1
PRC statutory income tax rate		25.00%	25.00%	25.00%	25.00%	25.00%
Assessable income			$ 138,220		$ 82,242	$ 27,888
PRC
Income taxes
Income tax rate (as a percent)		25.00%	25.00%	25.00%
Operating loss carryforwards			$ 610,183
Undistributed earnings			$ 3,453,450		$ 2,841,246
PRC statutory income tax rate		25.00%	25.00%	25.00%
Income tax rate withholding		10.00%	10.00%	10.00%
PRC \| TAL Beijing
Income taxes
HNTE tax rate (as a percent)	15.00%								15.00%
PRC \| Yizhen Xuesi
Income taxes
HNTE tax rate (as a percent)								15.00%
PRC \| Shenzhen Xingtong
Income taxes
HNTE tax rate (as a percent)							15.00%
Hong Kong
Income taxes
Taxable income under tier one tax rate		$ 2
Statutory rate - tier one		8.25%	8.25%	8.25%
Statutory rate - tier two		16.50%	16.50%	16.50%