I can honestly say that I had never heard of this story before today. I was browsing the Detroit Free Press site this morning and came across this article - Movie about when KISS came to Cadillac could film in Michigan. Back in the fall of 1975 at the request of Cadillac's high school assistant football coach, Jim Neff, KISS came to the small northern Michigan city for two legendary days. KISS music was played during the 1974 season to inspire the football team after they started the season 0-2. KISS came into town during the 1975 homecoming week and played a concert at the high school gym and spent two days visiting with the locals before taking off in a helicopter from the football field.
Now, "Cadillac High" has been approved to receive Michigan film incentives to film here in Michigan. The film will be based on the legendary KISS visit for those two October days back in 1975.
Here is a brief documentary piece about the 1975 visit -