What is a "school network" on facebook and how do I join it?

[Johnny]

So I've heard about these "school networks" on facebook. What exactly are they and how can I access it and what are the benifits? Does it just mean the people on facebook who go to that school. Or is there actually a facebook page with the name of your school where kids can chat on instead of just clicking on peoples pages and messaging them directly. So how does it work? Is it worth joiining? And can you add people from or to the school network to?

Thanks to all in advance.

[Son of an Italian]

a school network is something you would click, and it displays all the updates from only people from that school. it contains all the people from your school