But you simply must take the time to read and understand those documents before you affix your signature and send off the deposit check.. Even if you happen to think that they are too long to read.
The two basic documents are the Contract and the Discipline/Honor Code. Not only should you read them carefully but make sure that your attorney reviews both documents as well. As Benjamin Franklin said so succinctly: "An ounce of prevention is worth a pound of cure." It makes more sense to understand what you are agreeing to before you sign rather than to discover material information after the fact. A contract is a legal document. It is enforceable in a court of law.
Ann Dolin sheds some light on the private school admissions process in this short video.