Who are these CS students who need their hands held to such a degree? A simple, You should consider using version control for your projects. Try git or subversion. It will come in handy later in your career at the beginning of an introductory programming class should be all that's necessary. A CS curriculum doesn't teach students how to touch-type either, nor should it.

I'd suggest to people doing hiring that the candidates who haven't even heard of version control (which some other posters have mentioned interviewing) are ones that you don't want to hire. You should be glad to have the easy selection criterion.