Campus Drug Test

Caleb Stoll, of Springfield, Mo.,with Employee Screening Services, right, completes paperwork as a student waits near the specimen cups for instructions during a drug screening test Wednesday, Sept. 7, 2011, at Linn State Technical College in Linn, Mo. On Wednesday, the central Missouri school began conducting drug screens for all new students and any returning after an extended break in attendance.(AP Photo/Kelley McCall)