No, but most players do.
Can you show me pictures of 1920 college football players in the United States?
The University of Michigan - Ann Arbor since 1990
Quarterbacks, Punters and a few lineman. Most college football players are black. Most of the white players are too buzy getting an education.
only 1 in 10000
You can enter the NFL Draft with three years of college education. Many football players will redshirt as a freshman which is the NCAA legal way of giving a student five eligible years of football at college. You may see people enter the draft as a sophomore, however the redshirted so it is actually their 3rd year in college.
Approximately 7% of all college football players get drafted into the NFL.
The exact number of Division 1 college football players is unknown. However there are a total of 80,000 college football players across all divisions.
you draft them
You can't trade players in college football, Players can though transfer schools, but when they do they are required to take one year off.