I have a few family members at both KES and KEHS, and in other grammar schools as well. I agree with the 'Sink or Swim' comment. KES is such a brilliant school, but I would not recommend it for 'struggling or over tutored' kids, as they will be at the bottom of the class/year and will not get the proper attention. It is important that your kid is at ease whichever school he goes to. KES/KEHS is for the academic types, who enjoy reading/studying on their own without much intervention from parents etc.
So glad someone acknowledges that KES is for academic types
From posts I have read on here over the years, far too many seem to think KES is for sporty types who fail Grammars and is only useful as a backup for those that don't get into CHB/Aston
which is simply not the case!