Erm - despite my DS's primary school having an appalling record for helping DC with SN, and an abysmal record for dealng with bullying appropriately, my Y5 9yo DS1 has been tasked with a project, to be done in two days, to research and write a short project on a historical figure that no-one n hs class will have heard of.
It took 3 adults, one with a degree, another in their second year of a degree course, to come up with ANYONE that this 9yo hadn't learnt a bit about at school.
Before we settled on Henry Ford, we had run through people as disparate as Lowry, the Wright brothers, Nero, William the Conqueror, Watson and Crick, Attila the Hun, Charles Rennie Mackintosh, Samuel Pepys, Isaac Newton, James Watt, Thomas Edison and Alexander Graham Bell. They had covered ALL of those AND MORE in class.
I thnk that pupils in some state schools, particularly those that have involved parents, have a VERY well-rounded education. 8yo DS2 cooked pizza last week, Y6 have regular sessions where they either bake cakes to sell at cake sales for charity, or produce smoothies for sale in the summer. All years do cookery at least once a term. They start learning about famous artists in Reception when they reproduce 'A starry night', and they cover a minimum of 2-3 different artists a year.
They give them maths lessons where they get 'given' a certain budget to run a theme park, and they have to think about, and cover, all the costs involved. This project runs over a month, and takes one maths lesson a month, in Y5, and those that have thought of every cost, and make the most profit, win the 'prize'. They do another one in Y6 with running a house for a month, just after their SATS have finished. Oh - and in Y4 they have to design a cake recipe where the ingredients cost less than a certain amount - which is ONLY acheivable if they pool their resources - but they don't get TOLD that!
I don't see what is so wrong with a state education - it got ME a degree, it is well on it's way to getting my younger brother a degree, and my 9yo is dong exceedingly well too, so far.