ws, my girls aer both at university and left Habs. NLCS now so happier to name the schools which we found suited them both very well. I would have thought at 7 which is when the one who went to NLCS got in (no 5+ entry there in those days) you could test better. She read well, could write stories etc whereas her sister age 4 at Habs just talked a lot! But the schools did find they could check at that younger age as well.
The interesting question is whether parents who can afford fees are clever anyway and their children are and the home environment good so if you pay you're clever anyway. Or second theory we are all a blank slate bar a few genuiuses and very low IQ people and you can take any group of girls at 5 and teach them so well at 18 they will get mostly As in their A levels.
I have seen both. The boys' two prep schools although selective at 4 are not at the Habs/NLCS level and boys at 13 go to various schools depending on how bright they are and it can be quite mixed where they do go. That makes me think the selection at those girls schools does work. If it didn't work I can't see an economic case for bothering to go through all those test days, teacher time wasted etc etc just do it by whoever registers first gets in. So presumably they find they can assess.
"My impression is that all the girls in dd's class, whether they started at 7 or 4, are extremely able. What they have in common is highish to very high intelligence, coupled with the energy to go through a broad and rich curriculum at a cracking pace, while still being left with plenty of enthusiasm for music, physical activity - including just mucking about of course - drama and all the myriad of other activities on offer."
That is exactly what I see and I am sick to death of parents at other schools saying the schools my daughters were at were pressured awful academic hot houses when that's not the case at all. In fact may be it's the robustness they look for at 4, the confidence, ability to tackle things, to cope may be and I notice that's followed through now they're over 18 too but I'm not sure that's how the school made them but how they were which therefore helped them get in.