Well, no, at least not in Tennessee.
This article from the Columbia Daily Herald:
http://columbiadailyherald.com/articles/2010/12/09/top_stories/04noholidaycelebration.txtACLU sends Christmas letter
Warns schools not to break law
By Staff and Wire Reports
The American Civil Liberties Union of Tennessee is warning Maury County Director of Schools Eddie Hickman and 136 other public school superintendents across the state to refrain from winter celebrations focusing primarily on one religious holiday.
The group sent a letter to Hickman citing U.S. Supreme Court decisions that support the opinion that such celebrations amount to an unconstitutional endorsement of religion.
In a news release, Hedy Weinberg, executive director of the ACLU of Tennessee, said the letter was sent in response to numerous complaints from families.
The letter states that the ACLU welcomes “holidays that teach children about a variety of holidays. We believe, however, that holiday celebrations that focus primarily on one religious holiday can result in indoctrination as well as a sense within students who do not share that religion of being outsiders to the school.”