Gibbons, Steve (contributor); Silva, Olmo (contributor) - 2007
.5-2.8 percentile increase in the attainment distribution at age
16, relative to age 11. This is comparable to the gap between poor … pupils who are entitled free
school meals and others, and only slightly less than the gender gap (4 percentiles), which has …
been the subject of much academic attention. Even so, these gains are not large enough to
close the gap in the level of …