Illegal drugs = Police business
Illegal Drugs != School business
Ok, since you parents are so much into getting your children busted, then do this alltogether:
Because police must have probable cause for stripsearch (im sure that one day this will also be thrown out), you parents must do it for them. You can search your kids every hole and secret pocket and give all your findings to the cop. If any narcotics are found, vóila, jailtime for that little bastard!
In some states you get a bonus if this thing is repeated 3 times, mandatory minimum! I bet it would get you and your kid smiling to get him 99 years of prison time without chance of parole!
Believe me, if cop finds any drugs, that kid is out of school, since he prolly gets jailtime. He wont be bothering his classmates anymore. This is what youre afraid of right?
Oh but i forgot, its not YOUR kid thats harrassing (this seems to be synonyme for drug use (which seems to be synonyme for abuse)) others, no that couldnt be!
Luckily for most of the kids, drugs have never been cheaper, more available and pure, than they are now..After 40 years of worldwide drug prohobition. Seriously, these drug tests are just a small finetune to that machine, which needs to fail again and again to open peoples eyes.