The teacher was terrible, and I got a C+, my worst grade of college. She was a Korean immigrant whose English was also quite lacking. I enjoyed some of her work (she specialized in Japanese imperialism in East Asia) that I read outside of class, but she was awful as an instructor.
But I also just don't find modern history all that interesting outside of dense political stuff (political jockeying in USSR and Latin America). As far as pure history goes, I always preferred ancient history like the Achaemenid Empire.