[swarthyguy]

Fair enough but until you do a forensic test based on hair samples, the hard drug users will pass urine tests.

THose tests are expensive. EDS tests hair of its new employess.

And they'll just start drinking before tests and resume other drugs after passing.

How often should the tests be? Weekly, monthly, yearly?

[yendu bwam]

How often should the tests be? Weekly, monthly, yearly?

In school, I'd favor random drug tests with a regularity such that kids know they could well be tested.