Median Incoming GPA. Lower than Average GPA. The average GPA of students admitted to Campbell University School of Osteopathic Medicine is 3.2. If a school has a noticeably lower average admitted GPA compared to other schools, you should be vigilant in assessing the school's academic curriculum.ampbell University School of Osteopathic Medicine offers professional medical education for a Doctor of Osteopathic Medicine (DO) degree.