Is your Dh a teacher or would he be maintaining the network?
There are various areas that are important for schools. For example virtual learning enviromnents like moddle. Moodle makes it easier for schools and parents to share data. In the future if your kid has lost his homework sheet then Mum will be able to download another copy.
There is a lot of ICT in modern schools. interactive whiteboards are extremely common, but many teachers just use them as glorified protectors. Its a matter of getting good software to make lessons more interactive. Many teachers don't know how best to use their whiteboards.
Assessment for learning is a big isssue in primary schools. There is online software like SAM learning that tests children's knowledge through games. It can be quite sophiscated some of the things it can do, but it takes quite a bit of setting up. For example teacher could give a test to class. The teacher can then see if a the whole class doesnt know a particular topic or if its just one or two children who don't understand.
There is a lot of tracking of data and software is used to predict children's SATs results. The software can pick up if children are not on target and if there might be potential SEN.
Your husband could set up a web trail to guide children to particular educational website.
Assessment for learning is a big area in schools. For example many schools use SAM learning to test children's knowledge without them realising it. They think its fun.