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INCOME TAXES - Income tax reconciliation (Details) - USD ($) | 12 Months Ended
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Feb. 28, 2023 | Feb. 28, 2022
Income Tax Disclosure [Abstract] |  |
Expected federal income tax | $ 165,882 | $ 609,883
State tax, net of federal | 37,204 | 37,894
Research and development tax credits | (127,329) | (101,573)
Permanent differences | 78,252 | (179,320)
Other |  | (5,253)
Income tax expense | $ 154,009 | $ 361,631

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