Doesn't he know that if he starts to shave young, he'll be in full porn stache glory sooner????
My HS had a length of hair rule for boys - we had one teacher who would run around with a ruler and measure the hair to the collar...doncha know as soon as the rule was lifted, that teacher was the first to grow his hair out.
It's a rule, it's presumably in the student handbook, I guess the only quibble would be whether the amount of fuzz qualifies as a stache in violation of the rule. What about furry girls? Do they get the same treatment?