Once you get outside of religion classes and church services, Catholic schools tend to be pretty strong on the fundamentals. (Especially Jesuit schools)

When I went for HS, literally the only elective was Art, and for any student in honors courses, it wasn't an elective: you didn't take art because all of your time was in academic courses except for gym once a week. Don't get me wrong, I think electives are valuable and wish I'd had the opportunity: I'm just describing the educational priorities of that type of school. However they also need revenue, so the ones that remain these days are generally a little more friendly in allowing for an individual's interests.