Houston Independent School District (HISD) has provided prekindergarten classes for Houston area four-year old students since the 1985-1986 academic year. The focus of the program is on lifelong learning to enhance the physical, emotional, and social well-being of the whole child and provide the foundational skills required for career and college readiness. There are two main HISD prekindergarten program models: Early Childhood Centers and school-based programs. The vision of the HISD Early Childhood Centers initiative is to serve as a model for the district by providing a comprehensive state-of-the-art preschool program. The primary focus of the program is to develop academic readiness and to meet the developmental needs of preschool-age children. The district's Rebuild HISD Construction and Renovation Program included plans for a number of Early Childhood Centers that would become beacons for the community schools. Currently, there are five Early Childhood Centers, which only provide prekindergarten education to students: Fonwood, Armandina Farias, Gabriela Mistral, Martin Luther King, Jr. (MLK), and Ninfa Laurenzo. The purpose of this evaluation was to compare the academic performance of students who attended one of the five Early Childhood Centers with students who attended the school-based prekindergarten programs in 2013-2014. Additionally the evaluation assessed the impact of two HISD prekindergarten class models on students' performance on the 2014-2015 IOWA and Logramos English language Arts (ELA) and mathematics subtests. Highlighted findings include: (1) Effect size indicated that there were no differences in the mean standard scores on both 2014-2015 kindergarten IOWA English Language Arts (ELA) and mathematics subtests between students who attended Early Childhood Centers and their peers in school-based programs; (2) The analysis showed the performance of Early Childhood Center students and school-based program students on both 2014-2015 kindergarten IOWA ELA and mathematics subtests were comparable in the following student groups (ethnicity, gender, limited English proficiency (LEP), and at-risk), except for non-economically disadvantaged and special education students; and (3) When compared to students in school-based programs, students who attended Early Childhood Centers performed better than their peers on the kindergarten Logramos ELA and mathematics subtests.