Mozilla's Thimble and Webmaker Get Nods for Teaching Web Development Skills
As Lifehacker recently observed:
The folks behind Webmaker also work with a global community of educators, to find open and distributed ways of teaching web literacy on a global scale. If you're interested in picking up some skills with web development tools, look into Webmaker here. We also covered a number of good open source web development tools and training resources in this post.