Information adapted from Fiske Guide to Getting Into the Right College
You can appeal a college rejection, but it's not likely to secure acceptance.
If you are completely shocked that you were denied, ask your counselor to inquire on your behalf.
Rarely, high school transcripts can be misinterpreted, scores can be lost, etc.
If your counselor’s inquiry offers some hope, you should write an appeal letter to the college representative assigned to your school or region. Your letter should express your disappointment in being rejected and outline why you think it’s the right school for you.
Your appeal will have a better chance if your letter includes some new information about your motivation or recent accomplishments. After a week, you can call the admissions officer to make your case.
Remember to remain polite even if the admissions officer is unable to provide good news.