This is the link to the state STAR testing site. Here, directly from the source, you can compare the San Ramon Valley Schools based on uniform testing.
This site has excelent infomation regarding schools, there are others that can be accessed online or though 3rd party sources but it all comes back to the state tests.
Nieghborhood schools also take on the personality of the nieghborhoods they represent. High demand schools are typically the result of active parent involvement. This sounds sill but go to the shcool in the afternoon sometime and talk to the parents directly. Most parents are more than willing to share their opinions without too much additional effort.
In my opinion, way too much credence has been given to API scores and not enough to other things that matter more. Many are choosing to live only in neighborhoods surrounding schools with top scores and ignoring many other wonderful neighborhoods. Many amazing people graduated from schools with less than stellar scores â€¦ Steve Jobs would be a great example.