Reply To: Use of sacred choral music in public schools
The Lemon Test established an important test for you in this case: the government’s action must not have the primary effect of either advancing or inhibiting religion. You can argue, with Court precedence, that the school system is inhibiting religion in the students and community by banning all sacred material categorically. Here’s a quote from Justice O’Connor from Lee v. Weisman to back up exactly that –
…relentless and all-pervasive attempt to exclude religion from every aspect of public life could itself become inconsistent with the Constitution.