1. Pennsylvania's Teacher Effectiveness System uses multiple measures to evaluate teacher performance, including observation scores, building-level data, teacher-specific data, and elective data. 2. The Student Learning Objective (SLO) process is used to document teacher effectiveness based on student achievement of content standards. Teachers design SLOs specific to their courses to establish goals and select assessments to provide evidence of reaching those goals. 3. The SLO process involves teachers identifying standards, establishing goals, and selecting assessments, and principals reviewing and refining the SLO. The process facilitates discussions between principals and teachers about performance expectations.