Practitioner Examples

Clarence Fisher is a middle school (K12) teacher in Canada - awarded the Prime Minister's award for Teaching:
His Professional Blog: Remote Access (excellent post on Classroom Blogging is at the top).
His Teaching Blog - Classroom Resources: Excellence and Imagination

John Pierce is a Primary teacher in Victoria, Australia: his professional blog is "My Other Blog"
Some examples of his Student's blogs:  All about Monkeys, Ebony on Arts and Crafts, Emily on Writing.
Global Student: An innovative Web2.0 Research Project hosts the student blogs and provides Teaching and Student resources.