I really like the simplicity of the problem templates. And you have a nice collection there. May I ask how you displayed them to students, how students submitted their solutions and how you ran their code?

So far, we haven't focused very much on providing content (i.e. exercises) ourselves because Codeboard is mostly used to complement existing courses where the teachers already have content and exercises in mind. Codeboard just makes it much easier for them to handle submissions or e.g. integrate with an existing Moodle or edX infrastructure.

Using reference implementations - rather than tests - and having a simple way to provide hints (as you do in your templates) are features we're quite interested in. We did a bit of work on the latter recently but that stuff hasn't made it into Codeboard yet.

I'll forward your repo to some of my colleagues. Thanks again.