Personally,
I don’t think governors should be setting school strategy; that is the head’s role.
The governors scrutinise the head’s business plan and make sure that it is line with the school’s vision and it is achievable within the schools budget. They can certainly ask for it to be revised if not.
The best comparison in business is a non executive director or chair.
In reality, especially in smaller schools, this role is flexible. Our chair probably did work at least 10 hours a week, actually working in the school and mentoring the head. But, if you have a strong head. that is unnecessary.
There is a lot of data, much of it in a standard form and ‘rag’ rated against benchmarks.
However, when I was a governor (I was a full governor, not a parent governor, thanks to experience in both education and finance), I did realise that, when my children were at the school, a lot of problems could be hidden within great-looking data. After they left, I lost a lot of that insight.
It is definitely an interesting role, especially if you have relevant experience. As someone who has worked in two fields, I can tell you that, although education has commonalities with business, you can’t manage it in the same way.