how exactly is apr calculated, i would have thought unc would be higher
From the NCAA:
A Division I Football Bowl Subdivision team awards the full complement of 85 grants-in-aid. If 80 student-athletes remain in school and academically eligible, three remain in school but are academically ineligible and two drop out academically ineligible, the team earns 163 of 170 possible points for that term. Divide 163 by 170 and multiply by 1,000 to determine that the team’s Academic Progress Rate for that term is 959.
The NCAA calculates the rate as a rolling, four-year figure that takes into account all the points student-athletes could earn for remaining in school and academically eligible during that period. Teams that do not earn an Academic Progress Rate above specific benchmarks face penalties ranging from scholarship reductions to more severe sanctions.
So you start with 170 points if you use the full allotment of scholarships, and lose -2 for ineligible dropouts, and -1 for ineligible but enrolled student-athletes.