Having taught since 1972 I have dealt with many coaches. Kids love their sports and in some districts it was difficult to keep kids in band to graduation no thanks to the nerd image band kids had. There were coaches that referred to band kids that way. But the longer I taught in a district the better the retention in band and the less I heard "band nerds". One year I had almost all of the varsity football starters in band and they informed their coaches that they were athletes and "band jocks". Of course that was small schools where all programs had to share kids. Having a football team that seldom won district and a band that brought home Sweepstakes for decades didn't hurt band retention either.