Whatever traces of whatever substances in their bodies is not a matter of national security.
Public schools allow atheletes to perform on the field of play sometimes resulting in death and/or permanent crippling injuries. Meantime you want to test the kid to see if he smoked some pot the night before coming to algebra class...obviously in your totalitarian view endangering the lives of other students and severly effecting our national security.
Meantime, a muslim terrorist somewhere is busy planning death to America.
You need to get your priorities straight. Or are they for you already perfectly placed? Perhaps you are the terrorist planning my death by first going for the death of all our freedoms.
Wow. You are taking this discussion to personal levels. Are you a student in highschool?