Ask other people how they liked the class before you join either. Sometimes it can really depend on the teacher, the assignments etc. how much you enjoy a class. I've been told by classmates that the photography class at our high school is boring or that drama is fun, but it all depends on your school. Also, what are you more passionate about? Do you imagine yourself having more fun or learning more in either? etc.
Drama!! Personally I think it is better.
I personally would choose drama, but it depends on what you like.
