Confidence in results
Confidence in results
Attainment and progress measures are based on a given set of pupils' results for a particular test paper on a particular day.
The same pupils may have achieved different results on the day or the school would almost certainly have shown slightly different results with a different set of pupils, even with the same levels of prior attainment. Yet the school could be equally effective.
This causes us a degree of uncertainty that we should take account of.
- Next:Confidence intervals