When I took World Religions in college, I was not well formed in my Catholic faith, so the may have done more bad than good for me.
However, also seeing where each religion was similar made me the general believe in God stronger. World Religions really comes down to how it’s taught.
If it’s taught as a class to discredit Christianity, then it could do a lot bad. But since this is at a Catholic School, I would imagine it would be taught as a comparative course. If I was teaching such a course in a Catholic setting, I would always be comparing the religion to the Catholic Church to illustrate the Fullness of Truth we have.
Godspeed and God Bless