He's been following the election intensely, he's an excellent student with excellent grades and he hasn't missed any school this year. His school is pretty far away, so if he skips, it will be for the whole day.
My sister thinks he should suck it up and watch it at school. What do you folks think?
*EDIT* Thanks for your input everybody. I bought our tickets. The theater I planned to go to was sold out. So we're going to a theater nearer his school. The plan now is for us to go and have a good time at the extravaganza in the morning, then he'll go to his afternoon classes.