Click above title -  'First Step - Download the Software' The page will reload. Follow the instructions to download the software.

To purchase click title Second Step - Buy  First License above.

You are purchasing One Minecraft Education Edition  License for one user which expires July Yearly (regardless of when you buy it). £7 per license.  Start with one license and see how it works out for you and your family. There is the option to buy more if you need them.