I worked on a thin client system for a school district. Sunrays were just terminals for teachers so they could run apps on windows servers via Citrix.

I hated it, and installed some simple chat software on the Sunray servers for spite, but was never so pissed off as to advertise it.

Only teachers had access, anyway.

I wonder how many educational apps in one of the educational linux arena would run well on the Pi's themselves, running the gamut from gcompris to Octave and other heavy duty math and statistics apps.

That would let the students run them at home, even off the Internet.