洛杉磯有哪些好的K-12私立學校？我知道Polytechnic和Chadwick，但不清楚哪所更好，比如師生比例，亞裔白人比例，課業繁重程度，AP課程的開設數量，社區公益活動及課外活動的比重，ivy league Stanford近年錄取比例？期待各位有經驗的，熟悉LA私立學校的老師，同學，家長為我答疑解惑！也希望知道這兩所學校middle school upper school和Harvard-Westlake的比較，謝謝！
AP courses offered: 15 (courses offered in rotation)
AP exams administered: 593, taken by 233 students
Seniors accepted at highly-selective* universities: 92%
National Merit Semi-finalists and Commended students: 47%
* Institutions with an admit rate of 30% or lower
