The annual school Achievement and Attainment tables show actual performance of pupils, including a measure of the progress pupils have made based on their prior attainment and adjusting for other characteristics which are known to affect pupil performance. One of the factors used in this calculation of contextual value added is whether a pupil has English as an additional language. Thus this factor is already taken into account within the tables, for all pupils for whom there is a record of attainment at the previous key stage.