Many people are familiar with PostRank (recently acquired by Google), which ranks blogs by an engagement level.
You can see their complete ranking of education blogs here, but I thought I’d share their top fifteen here:
3. Free Technology for Teachers
5. voiceofsandiego.org — All articles, full feed
12. Larry Ferlazzo’s Websites of the Day…
13. Teach For Us :: the Teach For America blog network Posts
14. Moving at the Speed of Creativity