Pinching this from an interesting discussion on difficulties of getting into Graveney where the catchment area is down to under 500m or your child needs to ace the Wandsworth test (score needed in 2013 was 244 in the final round of offers which I think equates to about 90%).
I was surprised by these statistics comparing Graveney and Dunraven's performance but found them enlightening:
From the DOE Performance Tables:
Demography / intake:
Graveney: Low attainers 9%
Middle Attainers 38%
High Attainers 53% (and 13.9 FSM)
Dunraven: Low attainers: 13%
Middle Attainers: 54%
High Attainers: 26% (and 24% FSM)
So, in a school with more than twice as high a % of high attainers at Graveney (and a big discrepancy in FSM), these are the overall average comparative GCSE A-C inc Eng&Maths for the school as a whole
Graveney: 2011: 77%
2012: 79%
2013: 75%
Dunraven: 2011: 73%
2012: 72%
2013: 75%
Comparing like for like (i.e attainer group against attainer group) the % getting 5GCSE inc maths and Eng:
Graveney - middle attainers: 63%
high attainers: 96%
Dunrave-: middle attainers: 76%
high attainers: 98%
Average score per qualification:
Graveney- High Attainers:A-
Middle Attainers: C+
Dunraven -High Attainers: B+
Middle Attainers: C+
So, on this comparator Graveney gets a better score for it's high attainers - but those high attainers represent a super-selective intake. It gets the same score for middle attainers, where you would expect the groups to be more comparable.
So, if you remove the impact of the super-selective stream, Dunraven's results are broadly equal to Graveney's.
Might ease the pressure for some of you!