MADISON (AP) - All Wisconsin high school students participating in extracurricular activities would be subject to random drug testing under a proposal from a task force designed to combat heroin use. Rep. Joel Kleefisch, R-Oconomowoc, planned to introduce the idea along with others that came out of the anti-heroin group he convened, the Wisconsin State Journal reported Wednesday. The proposal would also require random testing for students who park their vehicles on school grounds.