A housemate of mine who went to Boston College in 2014 told me they did course registration on a terminal application, and I just remembered this fact. Based on what I've found online, you had to download an IBM 3270 emulator and run this application.

It was replaced in 2021: https://bcservices.bc.edu/service/bc-uis

You can see the iterface starting at about 40 seconds in: https://youtu.be/YMhsb3reSSw?t=40