The KDE-Edu team is having a meeting in Paris on the 1st and 2nd of december 2007 to decide strategies for KDE 4.1. This is a sign of the maturity of this project. If you are involved in teaching and software, don't miss that meeting. Many good developers are involved in the KDE-Edu team. Applications like kig, kalzium, Kgeography, etc. are developed by these guys.
Stay tuned for the conclusions.