Not a school issue but one for a local charity that asked for some help hope thats ok.
They wanted to extend the wifi range so bought a huawei ws320 repeater plug.
Now I have managed to get it to recognize there router ( a livebox) I have got a green light on the plug and everything. moved the plug to another socket where it still can see the router.
Then took a laptop bit further away to where the original wifi would not reach I can then see and connect to the livebox network however its only coming up as a local connection there is no internet access at all.