Diablo Magazine has published a pretty comprehensive look at our local public AND private high schools. Some great apples to apples comparisons such as SAT average scores, percentage of students in each school who take the SAT, number of teachers with a masters degree or above, number of AP classes, etc.
Clayton Valley High ranks as having the most teachers with a masters degree or higher in all of Contra Costa County's public high schools (Central/South Contra Costa).
Some very good information, maybe you'll find it as interesting as I did:
For public schools it also shows the number of suspensions and expulsions. I was surprised to see Mt. Diablo High School had over 600 suspensions (I assume this is a yearly average, or based on last year?). But out of 1610 students, 616 suspensions (9 expulsions) seems like A LOT!