Way back when I was at BYU, my first semester back from my mission I had a pretty decent load of classes, including an RM BofM class. That BofM class took more time than any of my other classes. It was a ridiculous amount of work for a 2-credit religion class. I later learned that teacher had a reputation for being that way. I had all A's that semester with the exception of that class, where I got a B-minus.
Other religion classes after that weren't nearly as bad. I had some that I thought were probably TOO easy, but I didn't complain. I had another Rel. class taught by a Business Law professor (New Testament, I think), and it was challenging, yet very interesting, and probably the appropriate work load. I loved that one.