Dont know if this will help or not but have you thought of speaking directly to the district  or head nurse. Sometimes a one on one helps these situations. If you cant get anywhere with that person you may want to consider contacting the president of the school board and go from there. CAH is still rather rare (some places, lol) and not very many people are aware of the affects, especially in salt wasting. I too gave mny daugter’s preschool a whole mess of literature on CAH & I still worry about if they actually realize what happens during a crisis. You may also want to get your child a medic alert bracelet as well. Hope this helps.