A technical college in Missouri is requiring all its students to undergo drug testing. KSPR reports the school is the only public college, and perhaps the only college in the nation, with a drug-testing requirement.

Linn State Technical College instituted the policy following the recommendation of community businesses likely to hire the school’s students. Almost 500 of the school’s 1,200 students will be tested by the end of this week.

If a student’s drug test is positive, he or she will be given 45 days to abstain from substance use, and will be provided help from the school. They are then required to take a second scheduled test, and a third random test. If both subsequent tests are negative, the student can continue to be enrolled at the school, and all test results are destroyed at the end of the semester.

Dan Viets of the Missouri Civil Liberties Association told the news station his organization has threatened to sue over the new policy.