Examine the rejection letter from the admissions board. This letter often contains specific reasons why the application was rejected, making an appeal letter easier to draft. Rejection letters often contain information about the appeals process, including where to submit an appeal and the time a student has to appeal.
Review your application form. Check to ensure every question is answered thoroughly and correctly. Amend any information, and attach further explanations to strengthen your answers, if necessary.
Highlight any additional information that has changed since the initial application. Add information concerning good grades, academic honors, extracurricular activities, additional community service or leadership positions -- this strengthens your position as a candidate.
Draft your appeal letter. Address it to the appeals board at the college; if possible, find a specific addressee. Your appeal letter should draw attention to the corrections and additional information added to your application.
Submit your appeal and amended application. Use a certified method of post, preferably with a return receipt to ensure delivery.