I too agree with everyone else that has posted. As a first year school nurse this year, I too had this same issues at the beginning. My rule of thumb for calling is: anything that would leave a significant mark, anything in which I think a parent might question (odd story from a child, etc.), and anything that I think may be brewing (seeing a student for earache, ear slightly red, but not enough for me to insist on appointment). Regarding head injuries: if I don't see anything or feel anything, as well as if the child is fine (not crying, not concerned, neurologically okay, etc.) I don't call.... Sometimes if its a questionable one I will send home a head injury form that gives signs and symptoms of concussion, etc. If it is swelling up at all, then I call immediately, and offer for parents to come get. If it is swollen and child is off, I insist child is taken home and recommend dr. Ice packs are my best friend, and well as band-aids. Ear ease for earaches when there is no redness or anything. Mints for sore throat, also for stomach aches as well. If they rest and don't feel better, I send them to class. 9/10 they are fine the rest of the day, the other 1/10 will then throw up and I send home. I DO NOT send home every child that vomits. I send home the ones that vomit multiple times, throw up in the room everywhere, and the ones obviously sick. I have too many that throw up because they overate, they didn't like their lunch, or they have all that drainage causing them to throw up (and when I look at it, its only mucus and a few food particles). I have found the parents that get mad that I didn't call for something, I tell them that I will make note to call you anytime I see your child... I do that and they quickly tell me, "well if it isn't that big of a deal then send them back to class". We can never win!!!