Depends on the era. When I first got there, the math was a joke, but when I was in upper school, it was traditional algebra, geometry and trig, taught by Will Vernard, who, to this day, I still don't understand why he worked there, since he was a rather smart fellow.
Anyway, while I was in Voyageurs, the first family, we had what was known as Mortensen math, which was a system designed to teach advanced math concepts to CHILDREN. We all thought it was a joke, and were frustrated.
It's ironic how most of us couldn't wait to ditch and cut school outside of CEDU, but once our academics were taken away from us, we complained like crazy about how much we missed normal classes that actually taught us something.