Random urine tests will be administered to students at Pequannock Township High School in New Jersey starting next month, ABC News reported Jan. 29.

The urine tests can detect alcohol use within the past 80 hours, meaning school officials will be able to tell whether students were drinking over the weekend. Positive tests won't result in disciplinary action, but parents will be informed.

The urine tests are more typically used in treatment programs to ensure sobriety among recovering alcoholics.

Among the critics of the program is the American Civil Liberties Union, which says the tests are an invasion of privacy and a breach of trust with students. And even some addiction experts in the federal government say that the urine tests are so sensitive that they can yield false-positive results based on use or consumption of common consumer products like hand sanitizers or vanilla flavoring.