Targeting not staffing a library is a budgetary consideration. Normally the first to go is the arts and music programs. The fact that a Catholic has religious instruction part of their curriculum may have something to do with the fact that it is a Catholic school. "Say, we have a religious school here, but we don't have religion taught in it. Will you please send your children here?" :areyoucra
Actually, since they're taxpayer-funded schools, they're open to anyone and any non-Catholic students are supposed to be exempt from religion classes and rituals... but recent history suggests that court challenges are often necessary to get the schools to follow the law in those regards.
I mention the Catholic board not because it's religious, but because it runs a significant number of the schools in the area. The Catholic board decided to close its libraries (as well as whole schools) to balance the books; the secular public board hasn't taken the same approach, but they're dealing with similar financial pressures.
My point was just that when you're having trouble paying for necessary things, it's not the time to start putting money into optional frills... and religion is an optional frill.
Yes, kids might get some good out of a course in world religions, but the same could be said about any number of other potential courses. If a well-funded school wants to offer a religion course as just one part of a wide spectrum of electives, great - I'm sure that there will be a small number of students for whom a world religion course would be the thing that ignites their passion and makes them excited about learning... but the same could be said for a course in African history, or the Vietnamese language, or modern poetry, so we shouldn't put a course in religion on some sort of pedestal.