I'm against religious accommodation in the schools - but we've always had it and some Christian sects have been the most vocal in demanding it.  

Easiest thing would be to allow students to leave for other religious venues and of course, rescind, the rule of accommodation school boards have to follow.

But tearing pages out of the Koran (or any "holy" book)?  Childish and provocative.  Don't do that and pretend multiculturalism or accommodation are the problem - that action and sense of entitlement to perform it is the problem.