I would like to talk about a hypothetical situation in which I am emailing my professor whose course name is 'BA.' If I want to tell my professor that I am one of his students, which of the following sentences should I use?
Hello professor, this is a student of your BA course
or
Hello, professor, this is a student in your BA course
Best Answer
Someone is only a "student of" a broad field of study, not an individual class. If I say,
Then that means that I am generally interested in philosophy. It doesn't necessarily even mean that I'm pursing a formal degree in philosophy, just that it is one of my personal interests. (Aside: If I wanted to say that I was formally studying philosophy, especially as a degree major, I would say, "I am a philosophy student.")
If you are taking a class, then either in or from is appropriate:
In is probably more common.
To answer a question in the comments, you are never a "student on" a class. You can be a "student on an exchange program" or a "student on leave," but on is never used with a class or a subject as the object of the preposition.