The Patriot League has an academic index (a minimum academic requirement) that athletes must meet to be admissible and eligible to compete. Army West Point and the Naval Academy have fairly unique admissions processes that are much more involved/stringent/difficult than the rest of the Patriot League. 

Question:  Do Army West Point and Naval Academy athletes still have to meet the Patriot League Academic Index, or is admission to the Academy enough?

Answer:  Yes. It’s possible to be admitted to the Academy and NOT be eligible to compete in Patriot League sports, although that would be a rare occurrence.

Bonus question:  Do athletes have to meet the AI even if they come through the Academy prep schools?

Answer:  Yes, there’s no difference between being admitted directly to the Academy vs entering through the prep school.