This report describes the Achieve 180 Program in Year 2. The 53 participating schools received Texas Education Agency campus accountability ratings of "Improvement Required" (IR), "Not Rated," or "Former Improvement Required" at the end of the 2017-2018 school year. The 2018-2019 Achieve 180 Program's centralized support was based on six pillars of best practice for school improvement and is delineated in this report. Achieve 180 Implementation Rubric Dashboard ratings were calculated by the Achieve 180 Program administrators in consultation with other district and school administrators to depict the level of implementation fidelity achieved for each Achieve 180 Program centralized support provided at each participating school in 2018-2019. The implementation ratings are included in this report. Also included are full versions of the Achieve 180 Program End of Year summary reports from Houston Independent School District (HISD) administrators that enumerate the program's massive implementation strategies and activities, accomplishments, insights, and recommendations for program improvement. Descriptions of the 2018-2019 (Year 2) Achieve 180 Program participants, interventions, and related findings are provided in this Part A report.