They really don’t care how many people apply from your school. I don’t think anyone from my school applied ED when I was going through the process, but at least 7 of us, 6 in the top 15 in the class (people, not %!) applied RD and 5 got in. Clearly, they look at everyone on a person-by-person basis. And to further drive home the point, the valedictorian did not get in, the salutatorian did.