Jr Sr Skip day

I think that the highschool should just excuse the absences on that day. Or well if they do that they shouldn't even have school on that day because then it would be sure that a lot more people would be gone. Either way it seems like there is no hope for that day because everyone goes out. People can come back with any excuse from a written note from a parent and get that absence excused with a lie so I really dont see the point.