Hi CheapandCheerful, I don't know if you've forgotten you started this thread but if you are still around I just wanted to say how much your OP resonated with me.
My DC's school is in exactly the same position - head left in July, deputy head is in interim position as 9 months of recruitment have not turned up a new head. It is small, caring, child-centered but doesn't get great results, partly as it has a more challenging intake than some of other schools around; but maybe partly to do with teaching and expectations.
Its just has an Ofsted and gone from good to RI. From conversations others have had with acting head and comments in report this is a lot down to the tracking systems. There is something telling in one of MMMs posts: "Schools cannot present "progress" in any other way than the required way." At least part of the reason for our downgrading is that deputy head really didn't get what Ofsted were after whereas a more experienced head would have been able to present what is there in the way they want to see it.
But... the guilt, the helplessness. My DC are Y1 and Y3. Four years ago I made the choice to send them to this school over an 'outstanding' one we are in catchment for. And I am continually haunted by the possibility I've done the wrong thing. I torture myself by looking at dashboards regularly - outstanding school has got better and better results and ours have got worse - but DC are really happy, DD has some tricky SN and school are brilliant for her confidence, and I have lots of 'anecdata' saying it really is a great school.
It's the bloody parental choice thing - if DC were just sent to this school I'd just get on with it, support school where I could and supplement at home where needed. But because this was a choice and I turned down the other option there is always the possibility its my fault, I've failed my DC.
AArgh you asked for encouraging - its not really is it? But very happy to hold your hand and scream together.