Homes in districts with higher API scores sell for more money than equivalent homes in districts with lower API scores. This is not to say that homes in lower scoring districts do not sell, they do, just for less money. So when the market is hot, like now, homes will sell, at homes will appreciate at a similar rate. However, when the market turns sour, it will be easier to sell a home in a higher scoring district.
If you look at the Monte Loma area of Mountain View vs South Palo Alto you can see a great example. Both have homes built by Eichler and Makay, 3-4 bedrooms, 1200-1400 square feet. Monte Loma is a great area, and has a good API score, but not as high as Palo Verde in South Palo Alto. Homes in south Palo Alto sell for 1.3-1.5 million, and homes in Monte Loma are selling for 850-950K.
Keller Williams Realty