Fans that are kicked out of NFL stadiums for being unruly now must take a $75 four-hour online class and pass a code-of-conduct test for readmittance. "We're not trying to squash anyone's passion. We're just trying to say don't be violent," Dr. Ari Novick, a licensed psychotherapist who developed the idea, said. Stadium requirements will vary across the league, but most of the time, a booted fan will be required to pass the conduct test.