Is this Legit?

I attend a private high school which was, for many years, 420 friendly. After one of our deans left, drug testing commenced. Normally, I wouldn't be afraid of this because a urine test is quite easy to pass, and I have passed them in the past. However, our school is going to extra mile and having hair testing done. This is very expensive and I am beginning to wonder if it's just a big bluff. Anyone who gets randomly tested has the option of admitting to drug use, which means you'll have to attend rehab sessions. Otherwise you could get suspended, expelled, etc. Everyone who has been tested who smoked just admitted to smoking so there is no way to be sure if they are even sending the tests to a lab. I am not sure what the company that they send their tests to is, but they claim to have students results in two days. Is it possible for a hair test to come back so quickly or are their cheap scare tactics nothing to worry about? Any feedback about this would be really helpful.

I haven't smoked in over a month, so if this is legit smoke a fat bowl for me

peace