This looks like this might be worth a bit of time to investigate: http://immersiveeducation.org/It came across the game_edu list this morning.
Media Grid call for participation: Immersive Education and Virtual Learning Environments
High quality PDF and Web versions: http://MediaGrid.org/#NEWS
BOSTON, MA – June 04, 2007 – MediaGrid.org launches Immersive Education initiative with an open call to educators, students, and professionals who have experience using virtual learning environments or video game technologies (such as Second Life, Croquet, Extensible 3D [X3D], Panda3D, Quake, Unreal, Torque Game Engine, and so forth). Individuals and organizations can visit ImmersiveEducation.org to select the next-generation Immersive Education platform, contribute to best practices, and establish standards for virtual learning environments and game-based learning platforms.