I have a child at DUCKS who has been there since the nursery. In just over a year we sit the dreaded 7+ and as my child is young for the year he will take it at 6 yrs 5 months old. As I understand it the grade required for entry into the Junior school is very high and even though you could argue they are preparing them for 7+/entry into the Junior school there is no guarantee at all they will get into DC Junior school (in fact even if a child has a sibling or two or three at DC) there is still no guarantee. I think the 7+ is a LOT of stress for children so young and probably if I hadn't liked the look of DUCKS so much when I visited it I would have put him into a school that didn't have the 7+. In my opinion, DUCKS is a good school but we have seen quite a lot of children in the 3 years my son has been there depart for Dulwich Prep (and other schools). Hope that's useful, good luck with your decision.