I feel sorry for teachers. How on earth do you think they can find the time to prepare 30+ individual supplement information so parents can help?
Don't understand me wrong I have been on the side where no information meant DD's standards slipped and we didn't know. But I personally think there are better ways.
For us it meant getting homework where DD had to do work like in class, maths and SPAG/comprehension workbooks, instead of silly projects like "design a poster of your favourite xyz". We realised DD had significant issues in working independently on the level the school gave her. So for us it meant then talking to the teacher and seeing what goes on.
We had tutoring after that because DD's problem couldn't just be solved with more practice or in class with 30+ other children. 6 months help with a tutor worked, it clicked and she moved up from "working towards" at the end of the year to "working exceeding" this year.
If the school gives out more information during the year of what is actually being done in school like proper homework or books on a more frequent basis or even more parent evenings, then parents can interact better, help out faster and children do not fall behind.
I wonder how many parents know of the actual hours teacher work. There are some days I collect DD from her childminder and for this I walk past her school at 5.45pm. I still see teacher leaving the grounds. DD told me that her teacher uses Sunday afternoons for marking books. He runs additional maths classes in Y6 once a week.
The problem is not necessarily the schools themselves, the problem is the system on which they operate. Too much red tape, too much paperwork, classes too big, too much pressure from the government.