I am not sure of the number. I think 11 plus 2 alternates. No, not every class has to be represented. You must have at least one female though. Last year my son's team was 8-9 Firsties, 3 Yuks and 1 Plebe. This year it is 3 Cows, 3 Plebes and the rest Yuks. We went and cheered his company on in the International Competition last April. He really likes it and the competition was fun to watch!13; all class years must be represented on a team.
Check the West Point Facebook page. This was posted there yesterday:I have been wondering the same thing @MD1.
Additionally does anyone know where on post will the competition be held? My oldest son is trying to go watch his little brother