USD is well-respected in San Diego, but it is not as well-known in the rest of the state. It is an expensive university, so, hopefully, he can afford the tuition/fees and the housing.
The largest employer in San Diego is San Diego Unified, but they just went through a pink-slip notice for 1400 teachers.
http://www.nbcsandiego.com/news/local/San-Diego-School-Pink-Slips-Layoffs-415879293.html
The larger districts have some sort of seniority placement.
Most districts, in our county, have a surplus of teacher applicants and many have admin credentials with Ph.D’s. Does your son have a reference job waiting for him?
I ask because one of my private school sites just went through a hiring cycle for next year. They were looking for 2 VP’s (they got 200 applicants); 1 counselor (50 applicants) and 5 teachers (40 applicants). Bilingual applicants were highly encouraged and preferred and were interviewed (both in English and Spanish by parent/student committees).
Don’t know if that helps.
What is his ultimate goal with his Ph.D.?