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David Blazar

David Blazar, Doug McNamara, Genine Blue.

While teacher coaching is an attractive alternative to one-size-fits-all professional development, the need for a large number of highly skilled coaches raises potential challenges for scalability and sustainability. Collaborating with a national teacher training organization, our study uses administrative records to estimate the degree of heterogeneity in coach effectiveness at improving teachers’ instructional practice, and specific characteristics of coaches that explain these differences. We find substantial variability in effectiveness across individual coaches. The magnitude of the coach-level variation (0.2 to 0.35 standard deviations) is close to the full effect of coaching programs, as identified in other research. We also find that coach-teacher race/ethnicity-matching predicts changes in teacher practice, suggesting that the relational component of coaching is key to success.

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David Blazar, Francisco Lagos.

Studies consistently show benefits of teacher-student race/ethnicity matching, with some suggestion that these effects are driven by role modeling. We explore this hypothesis by examining effects on the educational outcomes of Black and Hispanic students for exposure to same-race/ethnicity professional staff (e.g., administrators, counselors), with whom students interact less frequently and directly than with their teachers. Exploiting within-student and within-school variation in statewide data from Maryland, we find that increased shares of same-race/ethnicity professionals results in increased test scores, and decreased suspensions and absences for Black and Hispanic students. We also find that exposure to non-White school staff leads to improved outcomes for these students, whether or not they are from the same racial/ethnic group.

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David Blazar.

There is broad consensus across academic disciplines that access to same-race/ethnicity teachers is a critical resource for supporting the educational experiences and outcomes of Black, Hispanic, and other students of color. While theoretical and qualitative lines of inquiry further describe a set of teacher mindsets and practices aligned to “culturally responsive teaching” as likely mechanisms for these effects, to date there is no causal evidence on this topic. In experimental data where upper-elementary teachers were randomly assigned to classes, I find large effects upwards of 0.45 standard deviations of teachers of color on the short- and longer-term social-emotional, academic, and behavioral outcomes of their students. These average effects are explained in part by teachers’ growth mindset beliefs that student intelligence is malleable rather than fixed, interpersonal relationships with students and families, time spent planning for and differentiating instruction for individual students’ needs, and the extent to which teachers lead well-organized classrooms in which student (mis)behavior is addressed productively without creating a negative classroom climate.

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