This report describes the results of the evaluation's impact study which compares the effects of PEG on the cohort of children who entered PEG in the fall of 2016 (Year 2) versus those who entered PEG in the fall of 2017 (Year 3). All children were assessed at the same point in time, during the fall of 2017 (the beginning of the kindergarten year for the Year 2 PEG cohort and the beginning of the PEG preschool year for the Year 3 PEG cohort). The evaluation, described in-depth in this report and its Appendix, produced results that generalize to children right around the cutoff (i.e., children who are very similar to one another in terms of age and development) and compared skills for children who had PEG versus children who had not yet attended PEG but who were expected to be similar in all ways but age. (author abstract)