It would be easier to implement any form of student and/or athlete testing if all faculty were to be tested as well. As far as students in general being tested couldn't you (and I know this may be a reach but for example) test any student that attends a ballgame, school concert, goes on a field trip, goes on a trip with a school club, etc. as this could be viewed as participating in activities. I also think it is correct to assume that some would not participate so they would not be subject to the testing, but I think that would be the exception.