See:
[http://www.python.org/sigs/edu-sig/ EDU-SIG: Python in Education] - Python special interest group
SchoolsUsingPython - in courses
[http://edtech.coedit.net/EducationalPythonApplications EducationalPythonApplications] in development.
[http://edtech.coedit.net/BeginnerErrorsWithPythonProgramming BeginnerErrorsWithPythonProgramming]
Educational software developed with Python:
[http://emergent.brynmawr.edu/~dblank/pyro/ Pyro] - Python robotics
[http://www.cs.unc.edu/Research/assist/bats/index.shtml BATS] - Blind Audio Tactile Mapping System
Software to help with teaching Python: