Has anyone been drafted into the NFL that did not go to a Division I school?

Lots of them - it’s quite common for players from division II & III NCAA schools (and even NAIA programmes) to be drafted - Hall of Fame guard Gene Upshaw went to NAIA school Texas A&I (now known as Texas A&M - Kingsville), as did Redskins DB Darrell Green. They were both first round picks. As was Jerry Rice (Mississippi Valley State) - arguably the greatest WR of all time. Shannon Sharpe meanwhile was a 7th round pick from DII school Savannah State in Georgia and he too ended up in the Pro Football Hall of Fame after a storied career for the Broncos & Ravens. Some players are late developers who didn’t light it up in high school and ended up at a lower level college program, but then blossomed when given the opportunity. NFL scouting networks aren’t afraid to go off the beaten track occasionally to find diamonds in the rough and then draft them - a few don’t pan out, but many do go on to have successful careers.