Of course yes, anyone can used bitcoin, even the student, vendor or ordinary people. Even the rich level of people allowed to used bitcoin. Because bitcoin is for anyone or for everyone.
Don't say it like that it is like you are saying that rich people needs a permission to use bitcoin. We can just say it can be used by all except you are in a country with censored internet connection. I also heard that students are investing in bitcoin and use some of their profit to help their studies which is really great.