Senior Skip day

Doesn't everyone love senior skip day? Im kinda new to this since we didn't do this in high school but literally no seniors showed up yesterday. However, I have very few seniors in class so it didn't really effect me untill football practice when half of our senior football players didn't show up for practice. It really bothers me when my students don't put in a quarter of the effort that I do. In the classroom I make study guides and give a note outline and I find them on the floor or stuck in a book all the time and that tends to bother me a lot. It really bothers me when it is carried over to football or any other extra activity because they don't have to be there if they don't want to. In my History classes most of my students don't like History and don't care about it so I can understand to a certain extent when they leave stuff carlessly laying around. I just need to do a better job of getting them involved with what I am teacing. But with football there should be no me trying to get them involved or into it. We have a huge game this week and they think they can just take off a day its ridiculous. And the sad thing is if they treat the athletics like that then how do they treat their school work?