Teacher effectiveness varies substantially, yet principals' evaluations of teachers often fail to differentiate performance among teachers. We offer new evidence on principals' subjective evaluations of their teachers' effectiveness using two sources of data from a large, urban district: principals' high-stakes personnel evaluations of teachers,…

Nationwide, K-12 students designated as English language learners (ELLs) must learn both language and content simultaneously, and ELLs score far below the national average in math achievement. Many educators have suggested that identifying or developing teachers with skills specific to ELLs' instructional needs may be critical to addressing this…

The authors use administrative data from three large urban school districts to describe student sorting within schools. Students are linked to each of their teachers and students' classmates are identified. There are differences in the average achievement levels, racial composition, and socioeconomic composition of classrooms within schools. This…

This study seeks to identify the characteristics and training experiences of teachers who are differentially effective at promoting academic achievement among English language learners (ELLs). Our analyses indicate that general skills such as those reflected by scores on teacher certification exams and experience teaching non-ELL students are less…

Districts nationwide are implementing teacher induction programs as a strategy to increase both beginning teacher retention and student achievement. The induction of beginning teachers has been widely acknowledged as important for teachers' feelings of success and their retention (Darling-Hammond, 1994; Huling-Austin, 1989; Smylie, 1994).…

While prior research has documented differences in the distribution of teacher characteristics across schools serving different student populations, few studies have examined how teacher sorting occurs within schools. Comparing teachers who teach in the same grade and school in a given year, the authors find less experienced, minority, and female…