In response to requests for my template, I'm posting it here. This is a 4 page Word document that allows you to capture the most critical information caretakers, essential school personnel and doctors need. I understand it may seem long, but it the smallest snapshot I could think of to ensure I have with me and my son at all times. So far the docs and nurses have really loved it. At least 2 of the pages are info only, so you do not have to change unless you prefer to do so.
I hope this is helpful to your family.