Generally speaking, there are four admission methods for undergraduate study in American universities, namely ED (early decision and early admission), EA (early action) RO (rolling early admission) RO (rolling admission) and RD (routine decision and routine admission). The first two can be simply admitted in advance, and the latter two are more common admission methods.

1, ED: early admission, early decision, that is, if you are admitted by an early applicant, you can only apply for one school. After being accepted by the school, you may not apply for other schools. In other words, if you are accepted, you must choose it. Even if other schools offer you better conditions, you have no right to change your decision. If you are not accepted, you can still apply for RD normally.

2.EA: early action, which refers to singer choice policy school, is the same as ED, but you can re-apply to other schools after being admitted. The application deadline for ED/EA is relatively early, usually in June 1 1 or June 1 65438+1mid-October (some colleges of arts and sciences will delay the end until June1), and the admission results will be known in mid-February.

3.RO: The school has a deadline, but the admission date has not been determined. The sooner you submit the application materials and try, the greater the chance of admission. Take a first-come-first-served policy.

4.RD: generally, it ends in February of the year of 65438+, and the results are published in March-April of the following year.

Application rules: ED+ED: wrong ED+EA: correct, ED+RD: correct, EA+RD: correct.

Extended data:

The results are divided into three types: admission, extension (if you don't refuse, you will continue to screen in the RD application) and rejection. Unless the students' information is incomplete or the school has no time to review the ED application materials due to special circumstances (such as the impact of Hurricane Sandy last year), the decision to postpone usually means that the students basically meet the conditions of the school, so they will be considered later.

Rejection means that students do not meet the requirements of the school at all, indicating that there is a gap between students and schools at this level. Therefore, students who have been postponed should continue to apply for this level of school to improve their admission probability in the later stage of RD application, while those who have been rejected should focus on the next level of school, which is more conducive to application.

References:

Baidu encyclopedia -ED