Hi,
You will probably want to create a new group for all your students. Then, create the 60 individual users and make sure they are members of that group.
You can then set the privledges for the entire group rather than having to do it for each individual student.
Here is a really good resource for adding and removing groups and users:
http://www.icon.co.za/~psheer/book/node14.html.gz