Hello bunch of college students!
If you can share more information, we can help.
If you have a github account, create a repo, and put what you doing over there and share the link here.
Let's say you want to use centos, you can
mkdir centos
cd centos
vagrant init -m centos/7
This will create a minimal vagrant file, you can add this Vagrantfile to the github repo, and you can all share the file.
from there, check
vagrantup.com/docs and start adding what you require, and keep the repo up to date, so all the students can share the same box definion.
If you need assistance, just ask, try to be more detailed on what you need
Thanks!
Alvaro