wereami_

my school does a random hair drug test(where they just pick random people to come in and get one done).but the school has about 400-500 inrolled.should i be worried about getting tested?

mylobean

Is it a private school? How many people to they test each time?

Here's the formula you need: (Number people tested)/(number enrolled) = possibility of getting tested.

Shave your head.

wereami_

yea its a private school and they usually only take about 3-5 in at a time and as far as i know its not very often and if i shave my head then they take piss test. i mean i dont want to give up smokin for a while for something that may not even happen but also i dont want to get kicked out. also about how long does it take for it to get out of your hair?and piss for that matter?

mylobean

I'm not sure about how long it stays in hair. But I believe that it is at least 3 months, possibly a lot longer. You can get those drinks that make you test negative for a piss test if you don't mind having no hair. There's a link on the front page of marijuana.com, on the left, about detection times. Check it out. It's pretty good info.

Anyway, you have less than a 1% chance of being tested. Those are pretty good odds.