415协议是美国各大学研究生院针对某些学生同时接受几所学校的含有财政资助的入学邀请，却在事后反悔无法前来就读而导致一些学额浪费的现象，所达成的共同协议。此协议并不是一份法律合同，而且只在美国实行，并且只对签署该协议的部分美国大学适用。值得注意的是，即使一些学校加入了415协议，也可以和学校协商对承诺日期进行更改。
协议主要内容
任何学生在4月15日之前没有答复含有财政资助的入学邀请的义务，学校如果提早设定答复期限将违反协议。学生如果在4月15日的截止期限对以前做出的决定做出任意的改变。但当截止日期4月15日后的仍然没有答复的入学邀请，学生应该在没有得到原学校允诺（一般为书面）的情况下，不擅自接受其他入学邀请。这一协议目前在执行上比较松散，学生和学校往往可以在任何时间进行协商。不过它仍然从一定程度上规范了学校的招生行为，解决了以前学校各自设限要求学生答复的行为。
415协议英文原文
''Acceptance of an offer of financial support (such as a graduate scholarship, fellowship, traineeship, or assistantship) for the next academic year by a prospective or enrolled graduate student completes an agreement that both student and graduate school expect to honor. In that context, the conditions affecting such offers and their acceptance must be defined carefully and understood by all parties.
“欲申请或报名下一学年研究生的学生，就是否接受含有财政资助（如研究生奖学金，研究基金，实习津贴，或助教奖学金）的入学邀请问题上，与研究生院校达成协议。协议中清楚规定了入学邀请的条件，以及接受邀请的细节，并要求各方能够清楚理解。
Students are under no obligation to respond to offers of financial support prior to April 15; earlier deadlines for acceptance of such offers violate the intent of this Resolution. In those instances in which a student accepts an offer before April 15, and subsequently desires to withdraw that acceptance, the student may submit in writing a resignation of the appointment at any time through April 15. However, an acceptance given or left in force after April 15 commits the student not to accept another offer without first obtaining a written release from the institution to which a commitment has been made. Similarly, an offer by an institution after April 15 is conditional on presentation by the student of the written release from any previously accepted offer. It is further agreed by the institutions and organizations subscribing to the above Resolution that a copy of this Resolution should accompany every scholarship, fellowship, traineeship, and assistantship offer.''
任何学生在4月15日之前没有答复含有财政资助的入学邀请的义务，学校如果提早设定答复期限将违反协议。学生如果在4月15日的截止期限对以前做出的决定做出任意的改变，必须在4月15日之前向原校方上交一份书面辞呈。但当截止日期4月15日后的仍然没有答复的入学邀请，学生应该在没有得到原学校允诺(一般为书面)的情况下，不擅自接受其他入学邀请。也就是说，如果在4月15日之后收到其他邀请，需要得到原校方允诺才能接受。签署以上决议的院校均同意415协议适用于所有含有财政资助的入学邀请。”
