do u feel like cross country are more important then school work
if someone doesn't know and doesn't want to learn it whats going to make them learn it the second time.
I think you shouldn't have too just give them a zero on the assignment. Then there grade in the class will look bad. they can go to a class during centime and work on it not stay an hour after school people have things to do and were already at school for 7 or 8 hours.