Posie, well, in our case, with our children never even having been to school, the interview to explain to the school why we were withdrawing would be a bit redundant ;)
The only information we really have is that they were visited by the EWO which had no issues with them. This was a welfare issue, not an educational one, and we know nothing about any previous concerns and there's an investigation ongoing.
I'm not a supporter of an over-bearing state, and believe that the parameters of their responsibility cover prosecuting those who have done something wrong, not putting anyone who does something legal, but out of the ordinary, under surveillance.
This family had more input from the LA over education than we have had, and yet a child still died - because the parents failed spectacularly in their duty of care.
I believe in holding individuals responsible for breaking the law, and leaving them be when they give absolutely no reason to suppose that they are breaking the law.
I suspect that's a point in which we may fundamentally disagree, given what you've already stated about your view of the state.