Very interesting to read, thank you for updating! We're in the UK, but DS is at an independent school. I'm not sure whether in principle mixed ability or separate G&T teaching is best - I'd be quite happy to buy that mixed (age, as well as ability, I guess) is ideal, but in practice it doesn't seem plausible that a single teacher of 30 children can possibly be finding appropriate work all the time for real outliers (in any direction). You are probably lucky to be in one of the few areas that still has grammar schools. Keep in touch!
