Hoosiers is actually based upon the 1954 Milan Indians. Tiny Milan High School, with an enrollment of only 161 students, did indeed upset Muncie Central to win the Indiana State Championship.
In real life "Jimmy Chitwood" was named Bobby Plump (pictured No. 25) and he did hit the game winner for the Indians.
However, once again, Hollywood did manufacture a few story lines.
The team had 12 players, not 6 as the movie shows.
"Head Coach Norman Dale" was named Marvin Wood and was only 26 years old during Milan's miracle run. Wood was given the job after the previous coach was fired for purchasing uniforms that were not approved. Wood used to dress and scrimmage with the team at times for practice.
And as amazing as the Milan story is, it wasn't quite the Cinderella story we are led to believe. The Milan Indians had made it to the semi-final round of the state tournament the previous season. In fact, Milan won their playoff games by an average of 16 points per game.
Finally, head Coach Marvin Wood was married with two children. So there was no romance between the head coach and a teacher.
Which means that we could have completely avoided what may have been the most awkward onscreen kiss ever between Gene Hackman and Barbara Hershey.