Peanut schools haven't been around for that long. Few years ago the concept of peanut free school was experimental and it was just something that was been tested by a handful of schools. Epipen in every classrooms was simply out of the question and trying to educate school nurses and teachers about anaphylaxis allergic reactions was quite a challenge to say the least. Moms had to figure out ways to teach their children how to take care of themselves and find ways to help them self carry and hide the Less than ten years ago the concept of allergy free zones or peanut free schools was just a epinephrine auto injectors under their clothing.
The good that came out of this lack of knowledge was that many children got used to carrying their Epipen and continue to do so as adults. Even if a school is peanut free or has an Epipen in every classroom children with anaphylaxis allergies will benefit tremendously if they get used to carrying their own medications during the early school years. If they haven't started by the time they enter middle school most will refuse to ever carrying them.