Old women with school aged kids? I resemble that remark :)
All of the things your friends and family mention are false. Although we do seem, at least in my district, to all be over 40.
I completely agree with the above posters. I have had to deal with so many rare and not so rare medical conditions that I don't think anyone would be bored or loose their skills. The only thing we don''t have now are ventilators, but I have had a student with a trach in the past couple years. I have children with diabetes, seizures, severe asthma and allergies - I am responsible for the care and safety of these children when they are at school. Not to mention the ones with CP, CF, autism, hearing or visual impairments, cardiac conditions, Down Syndrome etc etc etc. If you encounter it in the "real" medical community, you will encounter it in the schools.
I personally don't run the health room at my schools, so don't pass out bandaids or pills, but I can tell you there is way more to school nursing than those things.