At an unnamed "THE" university, walk ons are chosen for their GPA first, then their talent. I knew a talented kid who was not even allowed to try-out at "The" university because his GPA was too low. At "The" university, walk ons are more than just scout team fodder. They help pad the team GPA.
At ND, walk ons appear to be chosen for many reasons other than GPA. It could be a legacy kid who has potential, or it could be the undersized speedy guy with a huge heart that is an ideal gunner on special teams. Or, it could be the son of a big name donor who adds to the team chemistry. Who knows? But nothing I like better than reading about a walk-on who earns a scholarship. I know we need 4-5 star talent, but I hope there is always a spot saved for a walk on who earns it.