If your willing to take a chance with used equipment then the Microtek 1800f, Epson 4990 or 4870 will scan 120 and larger.
I have a 4990 and as long as my negatives are not too dense or too grainy then I can get quite good results. Plenty sufficient for say 11 x 14 prints, maybe bigger, but I have not tried. I get a lot of grain aliasing if the negative are really grainy which I don't like.
If your a broke student, then find out if the photography department has a scanner and figure out a way to get access.