Should there be random drug testing in schools? (No, students are not experimental rats)

It’s not so long ago since I left school so I need to ask, who comes up with these ideas? In the era when we have half-baked teachers churning out students who can’t multiply 8 by 8, we are busy trying to ride high on the moral pedestal? What is random drug testing anyway? What will they test for, marijuana, alcohol, nicotine, shisha? Or our students are ‘sophisticated’ enough to gain access to cocaine or heroin? 
The New Times
Dean Karemera