SchoolRack has been around for years and is doing ~10K daily visitors. Both of these services do a lot of what we do... We're not bitching! :) Bring on the competition! The Education space needs some attention.
Whalesalad, totally agree, Education startups are lacking. I'm very impressed with the new Schoolrack release. Hey we are getting close to you guys :) http://www.quantcast.com/edmodo.com