R.J.
How much have you looked into what your new job would be? School admin positions are COVETED by at least half the student body's parents in most schools/districts and are nearly impossible to get. Also, many school admin jobs are "full" time (meaning you'll be working until 6) and often have weekend hours required (because sports and things run on campus, budget meetings, teacher/staff meetings held because that's when the district can get everyone together), plus student half days & days off are usually not teacher/admin staff half days, summer hours are either required at full time OR not paid at all (depending on the district). My friend who is a school secretary (Masters degree in school admin) says she gets at least 3 or 4 parents a week asking about her job, assuming it's a McJob kind of affair... HOW she doesn't get insulted is beyond me, but she always finds it funny that the vast majorty turn on their heels the moment they find out she works full time all summer. Not all districts is that true, but in hers, she works *more* in the summer than she does in the school year.
Now... I HAD to change jobs when I got pregnant (my job had me in warzones in 6mo-2yr stints... Can't lug a baby through a warzone -or rather, one would be insane to do it on purpose). I hadn't gone to school yet, so I decided to go to school (and 8years later am *still* in school, sigh, I'll be done about the time my son is heading to school himself... or you know, the apocalypse <rolls eyes> I sometimes feel like I'll be done when I'm 80). Now school has been the 'best of both worlds' for me... but REGARDLESS of what you do, I'd make sure that it's something that you love/ can be passionate about for the next 20 years before you jump ship.