do remember the schools know where your dcs are for primary and they do take the levels of preparation at the private preps into account. they will know if kids from x school usually do well when they arrive. they will know if kids from x prep school underperform vs their exam result
i'm not saying they don't have a massive advantage, clearly they do, but it's not as black and white as you might think.
we're on the home run too. avoiding doing papers, what she knows, she knows. i honestly don't even know which school i prefer, am trusting the process!