And the issues with basic literacy and numeracy are not a Secondary school issue.
By the time a DC gets to Secondary school, the damage is already done. Which is what Labour realised when they implemented the literacy and numeracy hours in Primary school.
If they would just write clearer policies and provide more funding for LSA's and TA's and early intervention and SEN help at Primary school, then there wouldn't be so many illiterate and innumerate Secondary school leavers. By 11yo, the damage is done.
What the education system needs is an early screening test (that'd be the new Y1 phonics test then), FOLLOWED BY good quality interventions.
As it stands, your DC can fail the Y1 phonics test, not achieve a level in the Y2 SATS, and STILL get no help to stop them from falling further behind and to catch up to their peers.
Putting all your eggs in the basket of a new Secondary qualification is a doomed experiment unless there is more readily available help and funding at Primary level.
My DD, had she been given the level of help in Primary that she has had for her first 3 years of Secondary, would not be leaving school with a handful of 'U' grade GCSE's, and she would have had a far better chance of catching up with her peers.
Starting this help at 11yo rather than 6yo meant that the attainment gap had widened too far for her to bridge in just 3 years. At 6yo, she was just 18 months behind her peers. By 11yo, she was 4 years behind her peers.
That gap widened because not enough was done by the education system wrt SEN help between the ages of 6yo and 11yo, despite me doing everything bar taking my illegally acting LA to court. Which frankly, had I been able to financially, I would have done.