The report provides some information about how schools are using this extra money and notes that "relatively few schools choose some of the best low cost proven approaches, according to the Sutton Trust/EEF Teaching and Learning Toolkit, with only 4% citing improve feedback between teachers and pupils and 1% saying they use peer-to-peer tutoring." (p8). It concludes "it may be too early to draw definitive conclusions on the effectiveness of the pupil premium, and there are challenges comparing data over time due to changes in how performance measures are calculated. But in the period when it has been available, there has been a narrowing of the gap in primary schools but as measured on the traditional five good GCSE measure and attainment at age 19, the gap has not narrowed significantly in secondary schools".
(See also The National Audit Office Funding for Disadvantaged Pupils June 2015)