Re: School MIS
You are right, school MIS's are a ticking timebomb really. There's extremely poor auditing and individual record control within them - for example, I've never seen any ability to hide certain data from general users, or block access to certain records. Why does every teacher and TA need access to the full contact details of every child and parent? At least one major MIS didn't even have proper auditing in place when I used it, so there was never a way to find out who did what/when.
However, I'll correct one thing - Wonde is not a QUANGO. Wonde is a private company that processes data for companies that use it. Companies go to them, and integrate with their tool, which integrates with all the MIS providers. When a school signs up for that third party tool, Wonde handles connecting to their MIS for the third party, acting as the middle man, transferring data. The DfE uses Wonde to get attendance data, so you end up forced to use Wonde as a school, to allow the DfE to gather the data they are legally required to have. There are other such tools, such as GroupCall, but it all depends on the third party as to which tool is used.