In working in a few schools I've found a range of ages in IT Support.
I'm currently 20 in my third school, first stared 19 on a year's apprenticeship, then 6 months at a private school and now a few months at my current place. Apprenticeship it was me and 29 year old guy, the private school was me, 25 IT Technician and 34 Network Manager and current is me, and two guys in their 50's. I've seen plenty of female IT Teachers but it seems the female IT Technicain is very rare indeed.