Update since I last posted. I managed to finally leave the school at the end of last year and now have two temporary positions working from home for a County Council. One doing more data stuff which I could take or leave but the other managing social media/websites and graphic design which I really enjoy. As I said both are temporary at the moment, Data until the end of March and Social Media until the end of May but both jobs are required so the department is pushing hard for them to continue. I'm tempted to not continue the Data one if offered more and start an online design course to get some kind of qualification but not sure yet, need to look more into it.
Still, a hell of a lot more happier in work than I was and from the sounds of it, the school I was at is still as big of a mess as ever. Had a few messages this month asking me how to do simple things that I already left in my handover notes.