Stockholders' Equity (Tables)

12 Months Ended

May 31, 2018

Equity [Abstract]

Schedule of Fair Value, Valuation Assumptions

The estimated fair value at the date of the grant for the warrants utilizing the Black-Scholes option valuation model and the assumptions used in the Black-Scholes option model for fiscal year 2017 are as follows:

Estimated fair value of warrants at date of grant	$	120,000
Black-Scholes model assumptions
Average expected life (years)		6
Average expected volatility factor		145.77	%
Average risk-free interest rate		4.0	%
Average expected dividend yields	$	-0-