text: whats...........................? whats a cotillion? is it like a party? what do you do there? a cotillion is presented kinda like a party, but it has the benefits of a class. it teaches social graces to both boys and girls. we put our son in it when he was 12 and he really enjoyed it. he had to dress up to go once a week, and they had "theme" weeks. he learned how to dance, how to do all the social nice-ities. and he learned that manners isn't just something "mom says" should be used.