Only 1.6% of the ncaa football players get to go pro. If you could break it down to just power 5 schools it would be much higher. There are 128 FBS teams if all had 28 scholarships, then 10,880 fb players on scholarship. If you figure and even amount of each class, that would leave 2,720 senoirs. There are 259 nfl draft picks. That would mean that about 9.5% would be drafted. Then you take some spots from the few from lower levels that get drafted, that would lower that percentage. So even if the NFL only took seniors and only FBS players you are talking about less than 10% getting to the NFL. So the vast majority of football players are not going to play in the NFL.