I do mean girls and boys - I've read the boys admission document and he who must not be named says that it is the same for Chatham girls. I think the reason they are doing it is simply to give them access to greater numbers, as both schools are usually undersubscribed. I know that the boys have spaces this year in Y7 and that they have at least one boy coming (often late) all the way from London
. And when children who fail the Medway test later manage to get reassessed in Y7 or Y8, it is always the Chatham grammars which have space. Not because they are much worse, but there are falling numbers in Medway at this age group and also from some areas the Chatham schools are a bit less accessible. But it does only seem to be these two schools - the others have no trouble filling their spaces, so no reason to change. And as they are all academies now, they can all go their own way.
As I said before, my DS sat the Kent, but with the Kent practice test which is offered to OOC, he took three tests on three successive Saturdays with Medway last. He passed, but it was a real slog, so it isn't a simple decision. Especially as I have just realised that with the Medway test going back into schools, it is quite likely that to take the Kent as well would mean taking the Kent test on either the Saturday immediately preceding or immediately following the week in which they take the Medway on Tuesday and Wednesday.
Hope your son is doing well wherever he is
But if you still want a Medway GS for him, it might be worth talking to Chatham boys.