This report contains the 2014-2015 evaluation report on the Home Instruction of Parents with Preschool Youngsters (HIPPY) Program. HIPPY is a school readiness program that helps parents prepare their preschool children for academic success. A total of 730 students and their parents participated in the Houston Independent School District (HISD) HIPPY program during the 2014-2015 academic year compared to 577 students in the previous year. HIPPY program sites expanded from 34 schools to 40 schools over the past two years. The current impact of the program was measured using reading and mathematics subtests on the 2015 Logramos and STAAR. Key findings include: (1) The 2009-2010 through 2011-2012 HISD HIPPY cohorts attained higher mean reading (ELA Total) and mathematics (Math Total) scores on the Logramos compared to HISD students. This trend was noted at third and fourth grades for the 2009-2010 cohort; second, third, and fourth-grades for the 2010-2011 cohort; as well as first, second, and third grades for the 2011-2012 cohort; (2) On the English STAAR, the district average scale score was higher than the 2009-2010 cohort score by 12 points at fourth grade, increasing to 37 points at fifth grade. Comparatively, on the Spanish STAAR reading test, the 2009-2010 cohort outperformed the district at third and fourth grades; and (3) On the English STAAR mathematics test, the mean scale scores of the cohort exceeded the mean scale scores of students districtwide at third, fourth, and fifth grades. The HIPPY cohort also outperformed students districtwide on the Spanish STAAR mathematics test at third and fourth grades.