Teacher and Principal Evaluation Policy
The state should require objective measures of student growth to be included in a teacher's evaluation score.
Impact of Student Growth: For all teachers in Arizona, student growth must count for between 33 and 50 percent of the overall evaluation rating. Arizona considers its teachers in two groups—group A and group B—for the purposes of evaluation.
For Group A teachers—those with available classroom-level student growth data that are reliable, aligned with the state's academic standards, and appropriate to content areas—classroom data must account for between 33 and 50 percent of a teacher's overall rating. If available and appropriate, data from statewide assessments must be used as at least one of the classroom-level data elements. School-level data is optional, but if used, these data cannot account for more than 17 percent of a teacher's overall rating, with combined classroom and school-level data not totaling more than 50 percent. The total measure of academic progress must include a calculation of student growth, which must comprise at least 20 percent of a teacher's overall rating. State assessment data must be a significant factor in the student growth calculation.
For Group B teachers—those who have limited or no valid and reliable classroom-level student growth data—limited data, if they exist, must be incorporated but augmented with school-level data so that the sum is between 33 and 50 percent of a teacher's overall rating. If no data exist, then school-level data must account for at least 33 percent and may not exceed 50 percent of a teacher's overall rating.
State's Role in Evaluation System: Arizona districts develop evaluation systems based on criteria provided by the state.
Arizona Revised Statutes 15-203(A)(38) 2018 Arizona Framework for Measuring Effectiveness https://cms.azed.gov/home/GetDocumentFile?id=57ed9958aadebe0bd08a76fa Rating Tables: https://cms.azed.gov/home/GetDocumentFile?id=57f6dbd5aadebf0a04b269dc
Due to Arizona's strong policies in this area, no recommendations are provided.
Arizona recognized the factual accuracy of this analysis.
7A: Measures of Student Growth
Many factors should be considered in formally evaluating a teacher; however, nothing is more important than effectiveness in the classroom. Value-added models are an important tool for measuring student achievement and school effectiveness. These models have the ability to measure individual students' learning gains, controlling for students' previous knowledge and background characteristics. While some research suggests value-added models are subject to bias and statistical limitations, rich data and strong controls can eliminate error and bias. In the area of teacher quality, examining student growth offers a fairer and potentially more meaningful way to evaluate a teacher's effectiveness than other methods schools use.
Unfortunately, districts have used many evaluation instruments, including some mandated by states, which are structured so that teachers can earn a satisfactory rating without any evidence that they are sufficiently advancing student learning in the classroom. Teacher evaluation instruments should include factors that combine both human judgment and objective measures of student learning.