S的REA的philosophy是尽快给决定 (final decision),deferral 的少, 被deferred后, RD进的可能性高一些。S的REA 应该给出全部 offer 的 30-40% of all offers (估计总共~2000份 offers, assuming 80% yield rate).
2022.03.31 -- "For this reason, the college (Stanford) defers as few restrictive early decision applicants as they can."
网上的数据 (2022.03.31)-- REA deferral rate:
Stanford REA deferral rate: 8.5% of all REA applicants.
Harvard: 68.1%; Yale: 57.6% ; Princeton: 78.9%