Intercepts is a blog about education business, and as far as I respect and appreciate their commitment to offer us great information, its list published yesterday, on Top Education Blogs is incomplete or leave out other blogs that rank equal or higher that those in the list.
There is not a methodology present, it is only stated that Technorati is the reference and that political blogs are on top of the educational ones.
For your convenience, you can access the full list in here. Remember that the ranking number along the name of each blogs change every time. As for today, those number do not match anyome.