Original Article: Silicon Valley School District Bang-for-the-Buck
I've assembled information from the California Department of Education site and the Palo Alto Daily News to provide a table of school district API averages for Silicon Valley and Bay Area elementary and middle schools.

Here are the API values for these Silicon Valley school districts:
| Campbell Union | 772 |
| Cupertino Union | 931 |
| Foster City | 801 |
| Gilroy Unified | 732 |
| Los Altos | 960 |
| Los Gatos Union | 897 |
| Mountain View-Whisman | 778 |
| Palo Alto Unified | 912 |
| San Mateo | 801 |
| Santa Clara Unified | 747 |
| Saratoga Unified | 952 |
| Sunnyvale Elementary | 781 |
Comparing School Districts and Housing Prices Remember the chart of median Silicon Valley single-family home prices in February 2007 from my article Determining Your Must-Haves When Buying a House?
Combining the chart for Silicon Valley school district rankings with the one for Silicon Valley median single-family real estate prices brings up some surprises. (I used a simple ratio between how far the API score was above 700 and the median single-family home price. The resulting number isn't really that relevant, it's the visual comparison I was looking for.)
Regarding Schools and Value in Pricing
First, while Cupertino and Foster City housing prices are very similar, there is a vast difference between the performance index of their school districts. On school rankings, compared to Foster City, Cupertino represents a much better value based on the median sale price of single-family homes.
Second, while Los Altos has the highest API scores, it also had a much higher median price putting it on-par with other elite school districts like Palo Alto and Los Gatos, but well-below Saratoga which had both higher test scores and a lower median home price.
Third, it is possible to cherry-pick good schools in average school districts. For example, you can search around Sunnyvale's Cherry Chase Elementary, which has a base API score of 941, if you're looking for a good elementary school. Stay tuned.
(c) Steve Leung for the Silicon Valley Real Estate Blog at 1SiliconValley.com
Recommended Reading:
[ed. This is the CYA: The data in the report is consider accurate but not guaranteed.]
Epilogue
There's a quirk in the ratings system where only test scores for "statistically significant" groups (read: ethnicities) are counted. Some schools, none that I can find documentation on, were accused of reclassifying lesser performing students into groups that weren't statistically significant to prop up their overall test scores.
There is a measure of transparency, though, because if you drill down on the individual schools, it will show which groups were counted, which weren't, and how many were in each.
This is really a fascinating overlay--and seems to validate the offhand commentary I give my clients about why I live in Sunnyvale, but in the Cupertino school district. At the time of purchase, it was the best house we could afford in the best school district. Years later, my clients (Realtors) often try to "upsell" me to Los Altos, but it didn't strike me as giving me more bang for my buck!