Has anyone taken level three art history?

I'm taking it this year through correspondence, and have never taken it before. I've done well at history and religious studies, and I'm all right at English, but I don't know too much about the subject as a whole. If you took it, was it quite easy or difficult? And what topics were the assessments usually on? I figured since I'm decent at social studies it wouldn't be too bad, but I don't know that much about art.