Hi, if you look at detailed Tedd results, these are some of the findings:
progress 8 significantly higher:
girls +0.29 (note 2016 progress 8 was also ~ 0.3 for girls)
EAL pupils +0.24
progress 8 significantly lower:
boys -0.31
disadvantaged pupils -0.28
prior middle attainers -0.21
There are many other striking things in the statistics... the percentage of prior high attainers is quite high (so these are the kids coming in with high SATs). Basically 2 in 3 children (155 out of 237) were prior high attainers when they joined Teddinton school. Their attainment 8 score was significantly higher than the rest of the children, however their progress score was average at 0.02.
The proportion of prior middle attainers was only 25% (60 children) and their progress 8 was terrible at -0.21.
And there were only 16 prior lower attainers (roughly 7%) but with good progress 8 at +0.2.
However, for both low and middle attainers the confidence interval is very high (simply because the number of children the statistic is based on is very low) - so really these progress 8 scores should be taken with a grain of salt for low and middle attainers.
For the high attainers though, the number of children included in the sample (155) is high enough for a more robust statistic, so that 0.02 progress score really confirms that the school does not add much value. "Coasting along its demographics", someone said earlier... Two thirds of the Teddington school intake comes in at a high level from primaries and the school doesn't help them realize or exceed their potential. That's the 2017 picture anyway...