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SIGNIFICANT ACCOUNTING POLICIES - Disaggregation of net revenues (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2022	Feb. 28, 2021	Feb. 29, 2020
Disaggregation of Revenue [Line Items]
Revenues	$ 4,390,907	$ 4,495,755	$ 3,273,308
Small class learning services, personalized premium services and others
Disaggregation of Revenue [Line Items]
Revenues	3,054,731	3,221,161	2,655,323
Online education services through www.xueersi.com
Disaggregation of Revenue [Line Items]
Revenues	$ 1,336,176	$ 1,274,594	$ 617,985

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Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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