Wikipedia
Edubuntu
Edubuntu, previously known as Ubuntu Education Edition, is an official derivative of the Ubuntu operating system designed for use in classrooms inside schools, homes and communities.
Edubuntu has been developed in collaboration with teachers and technologists in several countries. Edubuntu is built on top of the Ubuntu base, incorporates the LTSP thin client architecture and several education-specific applications, and is aimed at users aged 6 to 18. It is designed for easy installation and ongoing system maintenance.