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<p>This really varies from school to school. You can see this by hunting up the table of ED and RD acceptance rates that the NY Times publishes every year for many colleges. Some schools, eager to lock in applicants, have dramatically higher ED rates. Similarly, some EA schools have really high EA acceptance rates, hoping that by being the first to show they love an applicant the applicant will think of them fondly. :)</p>
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<p>Again, hard to tell–schools don’t give you info on their entire applicant pool. For another view, take a look at the CC Cornell forum and hunt up the acceptance threads from the last few years showing people’s stats and if they were accepted or rejected.</p>