I'm a student at a small high school in Denmark, im the only one using Ubuntu, but I'd like the other students to at least try it.
So I asked for permission to set up a small group of computers for the others to try, mostly for smaller school tasks, or random internet surfing.
So far they've let me set up 4 computers, and I would like to manage all the computers from a single computer which should also work as the "picture" for the other computers.
i need software to manage this, as mentioned below is VNC as an opportunity, but what i get from reading about it is that this kind of soft ware is just sharing a screen (which is hopefully wrong)
and what equipment would I like to use?
You might want to consider trialling Landscape which has a systems management interface to manage multiple desktop Ubuntu installations. It's a pay-for service, but you can register for a free trial to see if it fits your requirements.
Clonezilla is used for replicating or imaging installations to multiple machine, and not for synchronizing or managing. If you want to manage or control multiple machines from a single machine, then you can use remote desktop tools like VNC or, if you prefer command line, you can use ssh. Read the section on remote access here. As for your question "What is an Ubuntu server?", you can read here: Ubuntu Server Edition