Is taking 20% of only a few hours with a particular teacher going to be enough? It might be hard for students to do anything worthwhile with such a short timelength split over weeks. I'd go as far as to say it might be frustrating because the idea is awesome but they won't be able to really achieve stuff in this context. Still a great initiative!

I wish that, starting with high school, most teaching was project-based and schools worked to enable students to discover and learn stuff they care about, rather than shoving knowledge down one's throat. Want to make video games? Learn woodwork? Build an electronic device? Learn cooking? Schools should strive to provide a framework to make those things happen!

I think teaching people to be passive and keeping them from being productive until their twenties is a huge factor in school failure, dropping out and lots of social issues (at least in France where I'm from).