The Branson School in Marin County, CA has had a string of terrifically positive experiences with technology in the classroom. The math dept teaches all classes in fully networked classrooms. Each classroom allows for twenty laptops to plug into the room's network. The classroom 'net is served by a Quadra.
All data is projected onto a large ceiling mounted screen via ceiling mounted projectors.
This environment has changed the way math is taught and perceived at the school. The Science dept has recently installed a LEAP system for lab work. Each cluster of four students are served by one Performa attached to the LEAP probes. Again, great results. Finally, each freshman must take a technology seminar, one trimester in length.