Teacher fired for using religious music

This kind of hits close to home. I got in a debate one time with a friend/coworker (who was also an athiest) who was upset over music with Christian overtones being used at a school function. His stance was that no religious references of any kind should have been used, mine was that we live in a Judeo-Christian area of the world. The song choice reflected the culture. If I were living in Utah, I would expect references to Joseph Smith, in the Middle East, to Muhammed.