The original EPPE study (1996-2003) investigated children's intellectual and social/behavioural development between the ages of 3-7 years focusing on pre-school influences. The EPPE 3-11 study (2003-2008), has followed up the same children to age 11 years investigating both pre-school and primary school influences on children's attainment, progress and social/behavioural development. The EPPSE 3-14 study (2007-2011) provides an additional extension to this longitudinal study in order to follow the same cohort to the end of Key Stage 3 (age 14)
In EPPE, more than 3000 children were assessed at the start of pre-school (around the age of 3), their development progress was monitored until they entered school (age 5), and then at key time points (age 6, 7, 10 and 11 years) until the end of their primary school careers.
The study applied an 'educational effectiveness' design to establish the factors related to children's progress. The study has also used intensive case studies and classroom observations to' un-pack' effective practices. The EPPSE programme of research represents a major investment into early effectiveness research by the Department for Education (DfE).