P and H 的grade inflation。两者之间差别也不是太大。

In summary:

School	Approximate % of A Grades	Additional Notes
Harvard	Over 60% A's (79% A-range in 2020-21)	Median GPA ~3.83; grade inflation significantly risen over two decades
Princeton	About 55% A-range (2018-2019 data)	Median grade A-; grade inflation present but less than Harvard