There's lots more! Including:
Tools for assigning exercises and setting due dates
Rosters that track all student work automatically
An exercise editor for adding your own exercises
the full CodeLab.
CodeLabs automatically certify that the student has written correct programming code.
"I really enjoyed the way we were able to actually practice the techniques online." Jon L, University of Maryland.
"Code Lab has indeed proven to be invaluable in giving students additional hands-on experience and hence a better understanding of programming. The students have also given it favorable reviews. I will certainly be recommending it for next semester's introductory programming class." Glenn Jones, Professor, Medgar Evers College