The military has cracked down hard on drug use, my understanding is you test hot ONCE, you're out on your ear. I taught high school 1981-1986, trying to teach students who come to school high is an absolute waste of time and energy, drug testing of both students and teachers who use drugs and exposing them to scorn and ridicule and humiliation would do a lot more to improve public education than billions of dollars in added spending. I know a couple who lost one of their daughters-5 months pregnant-to a stoned driver. They'll be happy to talk to you.
Regulate it? I thought conservatives and libertarians weren't that keen on government regulation?