Keep failing, multiculturalism
It began when a parent was upset her child was told to sing "Rudolph the Red Nosed Reindeer." The parent is concerned the words "Christmas" and "Santa" hold religious meaning.
The mother tried to have a Hanukkah song added to the holiday show, similar to other schools in the area, but was denied that request.
There's no one rule that will please everyone unless we go radically institutional: ban religion, ban holidays, ban physical appearance and ban heritage.