Also in line with current studies is the report's finding that «for any groups whether minority or not, the effect of good teachers is greatest upon the children who
suffer most
educational disadvantage in their background, and that a given investment in upgrading teacher quality will have most effect on achievement in underprivileged areas.»
OECD recognizes that a clear human and material resource distribution gap affects student performance, stating, «
disadvantaged schools tend to... be more likely to
suffer from teacher shortages, and shortages or inadequacy of
educational materials... than advantaged schools.»