I have seen many horror stories and it hurts because the truly injured party is the child. Never be afraid to ask about something that you don't understand. Trust your instincts. You know your child best and if something just doesn't seem right, then it probably isn't. Don't allow yourself to be pressured into doing something you don't feel is right.
Nothing has to be done right then and there.
If you don't feel comfortable, ask to think about it and then reconvene. You may not please the school, but you will get peace of mind. There are many support groups out there both local and in Cyberspace. You aren't the only one who has ever done this and there are a lot of folks who can help you through this. This not only lets the school know that you are an involved parent, but also allows for things to get settled when they are small, not when they get out of hand.