Under oversubscription criterion 5 of the Waldegrave admissions policy, places are allocated to girls living within two halves (priority area A and priority area B) of a "rectangular catchment area".
Quoting from the Oversubscription Criteria Notes: "The shape of the priority areas for Waldegrave was originally determined by the link primary school furthest away in each direction in 1998 (i.e. North – John Betts, Hammersmith; South – St John’s School, Kingston; East – St Faith’s School; Wandsworth and West – Forge Lane, Hounslow). These points were used "as a basis" for the boundary of the priority areas."
Until today I've never quite understood this. There's no map on the school website, and the maps in the borough admissions brochure are about as clear as mud. It's generally known that places allocated to "Area B" are within spitting distance of Richmond Bridge (very nice addresses!), so I guess the rest of the rectangle isn't really relevant to most people, but I don't like not understanding things, so with a bit of help from a friend we made our own map.
We got confused at first because we used the 4 schools named in the policy as the corners of the "rectangle" but as that didn't make a true rectangle, we couldn't work out where the A/B boundary was. Then we realised the primaries just marked the north, south, east and west positions of the rectangle and it all fell into place. Once we had a rectangle, the boundary was easy to map in the middle.
So, now it's done I thought I'd share it, in case it's useful for others too: www.google.com/maps/d/viewer?mid=1yAHk1HEQtqt4qyqTnpPUkYOa3qA&ll=51.44414630279813%2C-0.30960049999998773&z=12