I think this is great as a self-assessment tool, especially for beginners.

It would work great with other learning tools, like MOOCs, datacamp, dataquest.io, as part of an overall data science learning process.

I'm more skeptical of its ability to help companies select candidates, but I could be very wrong about this and if I am then it's a huge win, so thanks for developing it.

I am super interested in seeing how you all develop this in the future,there's a lot of potential here. Is there a data science specific mailing list I can sign up for? I honestly, have zero interest in hiring for other roles so I am not going to sign up for a general mailing list.