因为加州人有钱的人其实很多，靠谱学区的家庭都是有各种课后资源帮助孩子的，不比私高资源差。T1000的公高还是top 4%的公高nationally. 上中产的两难境地，去私校，跟各类资源及其丰富的家长拼资源（$，捐赠娃体育娃）自然拼不过，去公立跟普通家庭孩子拼资源和基因等也许反而更有优势。
ZT:
The total number of high schools in the U.S. is expected to reach about 26,727, according to Educationdata.org. This means that high schools will comprise about 31% of all schools K-12. Between public and private high schools, there are 23,882 public schools and 2,845 private schools, respectively.Nov 21, 2020
