The Maryland State Department of Education (MSDE) is making significant strides in guiding and supporting the implementation of Student Learning Objectives (SLOs) as well as a teacher and principal evaluation (TPE) system statewide. MSDE support focuses on helping districts prepare for full SLO implementation by providing technical assistance with a focus on quality control, leadership development, and communications. This report, produced by the Mid-Atlantic Comprehensive Center at WestEd, examines educators' overall perceptions of TPE and key issues in implementation, including quality, consistency, and school, district, and state support. In particular, the study looks at the key TPE component of Student Learning Objectives (SLOs), an instructional process for improving educator effectiveness and student achievement. The report also includes recommendations that focus on ways to strengthen SLO implementation within and across districts in Maryland, while reinforcing the instructional emphasis of TPE. Supplemental tables and figures are provided in an addendum at the end of the document.