I think 'not valid' is quite a stretch. I don't think academics will be a determining factor here.
Even though i'm a UGA grad I think he goes to Purdue because it's a better opportunity to shine at his position. UGA is running back U and throws the ball 30 times a game or less most of the time. There's good exposure if you really excel at UGA, but I think the system that Chaney ran while he was there made it really hard to showcase TE/WR talent. I think Isaac Nauta is a prime example of this. Kid was a 5 Star, #1 TE coming into school and was rarely used over his career. Was great when he was though. Left early and was a 6th or 7th round pick....mostly because of a lack of a solid track record or utilization. Mark my words....that guy is going to be an NFL stud and UGA had little use for him.
Yes I know Carr is a WR....but let's be honest....he'll be a big slot/inside WR here....so basically a TE