SCEA稍微鬆一點。Harvard REA明確說不能申請私立大學的EA 或REA，可以申請公立大學和海外大學EA。原文

https://college.harvard.edu/resources/faq/if-i-apply-restrictive-early-action-harvard-may-i-apply-another-private-colleges
我讀過T5各家的FAQ，以前就發現網上籠統不提學校而總結出來的（英文的）是不對的。T5各家說的很清楚，網上胡亂總結。

If I apply restrictive early action to Harvard, may I apply to another private college's early action program (restrictive or not)?

No. However, you may apply Early Action to any public college/university or to universities outside the U.S.

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Yale 的 SCEA反而稍微寬鬆一點。增加了滾動招生的學校，增加了錄取通知晚於1月1日的ED和EA學校（不分公私立均可）。

Single-Choice Early Action applicants may also apply through other early admissions programs if the other program fits any of the following descriptions: the early admissions program is a non-binding rolling admission program; the early admissions program is a non-binding early program at a public institution; the early admissions program is an Early Decision or Early Action program that notifies applicants after January 1; the early admissions program is at an institution outside the United States.