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INCOME TAXES (Details 2)	12 Months Ended
	May 31, 2024	May 31, 2023	May 31, 2022
INCOME TAXES
U.S. federal statutory tax rate	21.00%	21.00%	21.00%
State taxes, net of federal tax effect	(51.10%)	0.00%	0.10%
Foreign rate differential	0.20%	0.70%	0.30%
Stock-based compensation	(8.40%)	(9.10%)	(11.00%)
Research and development credit	(1.50%)	(2.30%)	(1.30%)
Change in valuation allowance	(126.00%)	(9.30%)	(4.70%)
PPP Loan	0.00%	0.00%	(3.70%)
Other	(0.30%)	(0.60%)	0.40%
Effective tax rate	(166.10%)	0.40%	1.10%

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