Parents are entitled to see the minutes of governing body meetings and supporting papers that are not confidential. It would be a huge mistake not to give parents a summary of the Improvement Plan. Your MAT representative sounds dangerously patronising. I would be "that parent" too faced with such rubbish. Can't find a filing cabinet? Utterly unprofessional.
Regarding the LA - running this school is nothing to do with them. It is an academy. However, it would appear that the school is buying into their School Improvement Service. Often these services are a "Trust" and work as an economic unit where they charge for services. The LA will not want to see any school drag down achievement in their area.
I have seen the article about different styles of Head. However, I do think good behaviour is part and parcel of good teaching and the ethos of the school which is put in place by the Head (at the coal-face) and the Governors. Interim Governing Bodies may not have parents. What they must be is stuffed with people who will hold the Head to account and really know about school governance. A new parent Governor will not have this expertise. The new Governors must have, and expect, high standards. They must get appropriate advice and act on it. They are accountable, not the LA. They do not have to accept advice from the LA but they would be unbelievably stupid not to take advice from experts in the field of school improvement.
Few schools have the luxury of working on behaviour and let poor teaching go untouched. An Improvement Plan must include how teaching will be improved, what the timescale is and how success will measured. It will be a major focus. Everything in the report will be a focus and, of course, some are easier to do than others.
Pupil premium is not an easy one to put right if large numbers of children quality for pupil premium funding. It will take a monumental effort to get all the things in place to help these children improve, account for the money being used effectively, check the progress of the children and review the strategies in the light of evidence. If a school is not used to doing this, it will be a steep learning curve. Not least the fact that teaching is poor. Good teaching is what Ofsted look for first when raising achievement of PP children.
In my LA, Heads who turn round schools are highly prized. It is absolutely not career suicide - just the opposite in fact. They have a proven track record of school improvement - it is very valuable for the cv! But, all these Heads work unbelievable hard. No 6 weeks off in the summer for them! Often 12 hour plus days, every day! They do it for the children.
I would like to think, Primary, that the new GB will be more approachable and open than the MAT. They should be engaging with parents to get everyone on board with the improvements. They will want parents to sign up to a behaviour policy, for example..
Ofsted do not just look at Sats results, they look at progress and the quality of teaching over time. By the sounds of it, these children have been failed for years and have made insufficient progress to get good results in the Sats. (The Sats are more difficult now of course). Therefore it is probably likely the teachers who left were not very good either. Ofsted never recommend that anyone is moved on. If that has been said, it is a cover up for what really happened. A dynamic new management may be able to attract better teachers and middle managers. Let's hope so.