We're aware of this, and as @genieyclo said, Google Apps for Education is currently the easiest way for a whole bunch of students to get going. We've been succe

We're aware of this, and as @genieyclo said, Google Apps for Education is currently the easiest way for a whole bunch of students to get going. We've been successful using Apps for Education with all of our pilot Khan Academy schools so far. That being said, we're thinking about becoming our own identity provider as well, primarily for this reason. Just one of those things that's on the list and has to be weighed against everything else -- the majority of our users are doing just fine w/ Google/Facebook.