What is a teaching assistant? Graduate students who teach a class (sometimes they help a faculty member teach a large class). Typically teaching assistants teach in the same academic area they are studying. Get notifications!Sign-up to receive an email when new articles are released from BetterCollegeStudent.com. SUBSCRIBE! You have Successfully Subscribed! We won't sell or give away your info, ever. This is for new article notifications and major announcements only, promise.