Andrea Lash

The purpose of this study was to examine the validity of teacher evaluation scores that are derived from an observation tool, adapted from Danielson's Framework for Teaching, designed to assess 22 teaching components from four teaching domains. The study analyzed principals' observations of 713 elementary, middle, and high school teachers in Washoe County School District (Reno, NV). The findings support the use of a single, summative score to evaluate teachers, one that is derived by totaling...

This study, undertaken at the request of the Nevada Department of Education, examined the stability over years of teacher-level growth scores from the Student Growth Percentile (SGP) model, which many states and districts have selected as a measure of effectiveness in their teacher evaluation systems. The authors conducted a generalizability study using three years of data in mathematics and reading for nearly 370 elementary and middle school teachers from Washoe County School District in Ren...

The purpose of the study reported here was to explore the relationship between the type of high school attended (magnet versus comprehensive) and the likelihood of graduates having completed an advanced course, after accounting for students' prior achievement. In addition, the study examined the relationship between students' prior achievement and the likelihood of students completing an advanced course, and whether the nature of this relationship differs between different types of high schoo...