It's a standard winter session thing; it's that many hours a night because it is probably a full 3 credits ( getting the kids closer to graduating!) what does it cost? Because it might be super fun and you might hate to miss out on it. It's only two weeks, and the teacher will be as aware of the marathon-ness of the schedule as you and probably give time to stitch or something. And if you get too bored or tired you can always leave - you don't need the credits, do you?