I am building a website for a karate school. Each student has their own profile which the staff edits (containing belt information). I would like an add-on where we can have a computer logged in at the karate school with user-account "FOO". When students enter the school, they view a sign-in page with the names of all the Students in their class. Through the "FOO" account, the students select their name to sign in. From here, class attendance is added to their profile.

I am guessing that this would be done by assigning the user "FOO" to CB admin, and allowing that account to add a date to any students profile page with the click of a button (the students name).
It would be great if we could assign students to particular class pages, so that we can just pull up the page before class and not have to show hundreds of students.