Thanks for the quick response all… one question:
do you mean that going from Del Sur to Fallbrook will be worse than going from the Northern edge of SD or vice versa. I’m assuming vice versa. 🙂

We will also look in Temecula, but prefer the schools in the PUSD or even the San Dieguito district.

Is carlsbad that close? google maps has me at 35 min from Carlsbad to Fallbrook.. essentially the same time from the Del Sur/Black Mountain area.