FreiOSS.net e.V.  (300 international members) 

Linux4Afrika is using x2go in typical classroom environments. They are a very active part of our community and helpt to keep the boot environment up to date. They've got the best x2go manual online:

www.linux4afrika.de/x2go/basic_installation.html

Skolelinux is a complete tailored software solution for the needs of any educational institution or school. It is a ready computer system were your school does not need to piece together the components.

X2go is part of the "Rheinland-Pfalz" Musterlösung.

Linux4Paraguay