"because public school is so traumatizing and torturous."

LOL, if you really think school is as bad as prison you have never been to prison.
Drug testing is a scam, a way for drug testing companies to make money. Other drugs besides pot can't be detected after just a few days. Apparently though the supreme court has deemed random testing of students in extracurricular activities to be legal. Should be a windfall for the testing companies, redistributing student parking pass money to a for profit corporation, brilliant!