We are in a routine where we get new med forms signed each year, but it is the same each year. So, I print them off and drop them at the ped office to sign a couple of weeks before school starts. The other FA policies are standard for the school(until we go to a new one again) and fairly comprehensive. If we did not have policies in place, I would be sure to go over any concerns a few weeks prior to the start of the year, and do still email the team and nurse about dd, so they know who she is, her allergies, regardless of the policies. I do not presume the communications happen the way they should I flag all faculty.
DD is only PA and TNA these days, brings lunch everyday, and is not seeming to be contact sensitive anymore. In preschool she used to get the occasional hive or swollen eye. Has not happened for 9 years, perhaps, and she is exposed to peanut protein at school for sure. Kids bring it and have nutty foods at school and now, in Jr. High, she sits wherever she wants.
So, her age and personal history play into out routine. In preschool/early elementary I was much more involved at the start and throughout the school year. In those years, I provided educational materials to the preschool, and had meetings with teachers.