Which comes with different variants ... with different initiatives as given bellow.
Edubuntu is an operating system designed with education in mind.
An organisation or Education Ministry that is wanting to take full advantage of the benefits that open source software offers to the educational environment.
Educators and school personnel who would like to set up Edubuntu in a networked learning environment.
Home users who would like to have a standalone computer system that focuses on education for the younger members of the household.
Edubuntu gathers together the best available free software and digital materials for education.
"It can run on inexpensive, 10-year-old IBM-compatible computer as well as brand new I64-based systems"
Xubuntu is a complete GNU/Linux. It is lighter on system requirements and tends to be more efficient than Ubuntu with GNOME or KDE, since it uses the Xfce Desktop environment, which makes it ideal for old or low-end machines.