[WorldMaker]

I "released" a bunch of my class projects as open source and nearly ran afoul of plagiarism accusations (of my own stuff) even though at the time (pre-GitHub) my stuff was only in darcs repos on my own hosts and was generally hard to find. (That ultimately was what saved me in that it was very obvious these were indeed my own files and also that I wasn't posting them for other people/classmates to cheat off me but for my own usage and/or sometimes team collaboration.)

I realize there's a lot of interesting ethics boundaries on public software projects during education. I've always been "pro-open science" that more student projects should be open source/allowed to be open source as "teaching tools in the round", but am sympathetic also to how easily that can be abused for cheating or plagiarizing. I think it is an interesting discussion with no easy answers.