Each season provides an opportunity for updating your records for the kids in your program. I've seen many variations of registration forms, but most include these basics: parent/caregiver contact information, permission to treat injuries, allergies that the church should be aware of, special accomidations that might be helpful, and a check box for permission to post photos.
Do your registration forms include anything else that you've found helpful? What method do you use to register kids for Sunday school, children's programs, or VBS (a booth in the atrium, an online tool, etc?). Please share what has worked for you, and anything you've tried that has NOT worked out. If possible, send me a copy of your registration form for others to see.