Progress is calculated using Key Stage 1 as a baseline, and comparing each pupils Key Stage 2 outcomes compared to other pupils with a similar starting point nationally. Confidence intervals are used to show significance compared to national progress.
Error bars on the graphs indicate significance, where the line is entirely above "0", the school's progress is significantly above national progress. Where the line is entirely below "0", the school's progress is significantly below. Anything else is in line with national progress.