Secularists will probably lose this one.  Here's the staus of a Muslim accomodation court case in Calgary involving a private secular school:
http://calgaryherald.com/news/local-news/havent-changed-a-thing-private-school-much-the-same-despite-prayer-appeal
If you drill down into the pschology you will find that not all religions are equal in the eyes of the decision makers.
People who banned reciting the lords's prayer or providing space for after school bible studies without a second thought tend to go all wobbly when Muslims make similar demands; some of which require physical renovations to buildings, introduction of dietary restrictions in cafeterias, and gender based segregation.