Elementary School Specific
http://www.classroom20.com/group/elementaryschool20
Middle School Specific
http://education.ning.com/group/middleschool
Middle School Girls and Robotics
http://isenet.ning.com/group/middleschool/forum/topics/getting-female-middle-school
A Network on RTI here
http://education.ning.com/group/RTI
A state school improvement network (Alaska)
http://aeinetwork.ning.com/
A tech in schools network
http://www.iste-community.org/
A network on using Ning in schools
http://education.ning.com/
A high school student author site built around James Patterson's work
http://jamespatterson.ning.com/group/highschoolstudents
