I have an old PC of mine that I'm thinking of preparing for use by a school-going child. It's a decade old PC with a 40GB hard disk, Pentium 4 processor, and I believe 1GB of RAM.
As of now, I have:
Installed Lubuntu and Windows XP on it (Vista and 7 don't have drivers for this hardware, and yes I've searched the manufacturer's site and other places)
Installed Avast and Outpost Security Suite on the XP
"Pinned" Khan Academy, Coursera, Udacity and Codecademy on the Firefox "new tab" page
Other than this, what can I do to prepare this computer for this purpose? My knowledge of desktop software for education is lacking, in both Windows and Linux. I'm not sure if whoever buys this will have a good Internet connection (I'm in India), so desktop software will probably prove much more useful that the bookmarks above.
I'm also looking at free parental control software to install on this, I'll make that a separate question. Edit: The question is now at the Software Recommendations site.
(I wasn't sure where on StackExchange this would belong, but superuser seemed the closest candidate. If there's a better suited site, please do migrate, thanks.)