Fee waivers are available to US active military and veterans. The admissions process takes only a few steps and applying online is quick and easy.Follow the Steps to Apply to get started. High School Diploma. Mail to: All high school and college transcripts are required. The priority application deadline is March 1. With a GPA of 3.42, Suffolk University requires you to be around average in your high school class. You'll need a mix of A's and B's, and very few C's. For additional information please click here. Two (2) forms of proof of address must accompany your application.