$88000/year for kids' schooling?!?! Couldn't enroll them in public school?
I was in SF when my child was young, but as soon as we started digging into the school enrollment processes, I moved to Lafayette and enrolled him there.
Lafayette was more expensive than Union City, but a better place to live and school, but perhaps not a place where a house could be as affordable.
That said, none of it would compare with a 32 acre farm near Vancouver, IMHO...
Logic and school districts don't usually have anything to do with one another.