Being raised (and still attending) Anglican I'm inclined to be a bit defensive. Can't stand the tune to start with so I wouldn't break my heart to never hear it again...in spite of its peace message...but it IS counter religious and it's not a good match for the school. Big deal, there are lots of other songs, and Imagine shouldn't be elevated above any other. Hell, my parish once didn't like Onward Christian Soldiers because of the military imagery, but now it's back because the metaphor is understood by whoever chooses the hymns.

Tempest in the teapot, or beerkeg, depending on the school.

Peace, Mooh.