Black-Scholes model weighted average assumptions (Tables)

9 Months Ended

Feb. 28, 2013

Black-Scholes model weighted average assumptions

Black-Scholes model weighted average assumptions

The weighted-average fair value of the 10,000 options granted in fiscal 2012 was estimated as $2.35 per share on the date of grant using the Black-Scholes model with the following weighted average assumptions:

Expected life	5.77 years
Assumed annual dividend growth rate	0%
Expected volatility	188%
Risk free interest rate	1.86%