Which N London girls' preprep stages their assessment as a fairy party?

[theauthor]

Long story but if anyone can tell me which it is I'd be really grateful. I read about this on an old thread but am not sure if it's something of an urban myth!

At Channing School in Highgate they are asked to bring a doll or teddy along. I think they start off with some sort of make believe picnic party.

Ah that must be the one...thanks