Hey Jessica!

Your question is a bit unclear. The medium of teaching depends on the college or university or other educational institutions in which a student is enrolled in. You will have to specify the name of the college or any other educational institution which you are referring to in your question. Once you mention the name of the institution, then only any accurate answer could be given. Generally, if we take an example of Delhi University (DU), there the medium of teaching remains English as well as hindi. So, it basically depends on the different universities as well as the geographical region in which an institution is situated. English remains the most common medium of teaching. You may provide the detail of the educational institution in your question and you may post it or write in the comment section so that your query can be cleared.