No. Not all college football players go to the NFL, not even all division 3 college football players go into the NFL
Approximately 7% of all college football players get drafted into the NFL.
NFL players are not required to attend college. Still, it is quite difficult for a football player to gain the skills necessary to play in the NFL without playing college football. Still, a few European soccer players have been kickers in the NFL.
Are the any NFL players from Washington and Jefferson college
No, but most players do.
No. You have to be drafted
1 out of 736 college basketball players make it to nba
So players get into the nfl
I would assume it is because there is a higher probability of them being drafted into the NBA than there is for football players to be drafted into the NFL.
I have to assume that you are talking about NFL professional players. Since most of them come from college football teams, most have a college education.
Hundreds, as college football started in the 1870s, and the NFL started in the 1920s.