楼下贴 parchment 的 讨论一下. 这个好像比yield rate 更不靠谱. survey bias
https://www.parchment.com/c/college/tools/college-cross-admit-comparison.php?compare=Purdue+University-Main+Campus&with=Harvard+University
https://www.parchment.com/c/college/tools/college-cross-admit-comparison.php?compare=Stanford+University&with=Massachusetts+Institute+of+Technology
https://www.parchment.com/c/college/tools/college-cross-admit-comparison.php?compare=Harvard+University&with=Massachusetts+Institute+of+Technology
https://www.parchment.com/c/college/tools/college-cross-admit-comparison.php?compare=Princeton+University&with=Massachusetts+Institute+of+Technology