Read the school budget. Distribute a list of the stupid expenditures. Put alarm clocks in numerous lockers. Set them to go off every ten minutes and then close and lock the lockers. If the school tries to punish you, call your local news agencies and patriotic groups to complain that your school is run by pinkos.
Some schools have automatic sprinkler systems that go off when sensors detect too much heat.
Find the sensors and hold a match to them. Get the senior class to use the senior gift money for something subversive. Demand that all school equipment being stored rather than being used be made available to students. If your school won t conduct teacher evaluations, do it yourself. Give the results to the students, faculty, school board, and community.