Michael J. Petrilli David Griffith, Ph.D. Adam Tyner, Ph.D.
10.3.2018

On this week’s podcast, Seth Gershenson, associate professor at American University, joins Mike Petrilli and David Griffith to discuss the Fordham study he recently authored on high school grade inflation. On the Research Minute, Adam Tyner examines the impact of principal effectiveness on teacher turnover.

Amber’s Research Minute

Jason A. Grissom and Brendan Bartanen, “Strategic Retention: Principal Effectiveness and Teacher Turnover in Multiple-Measure Teacher Evaluation Systems,” American Educational Research Journal (September 2018).

President, Thomas B. Fordham Institute

Michael J. Petrilli is president of the Thomas B. Fordham Institute, executive editor of Education Next, editor in chief of the Education Gadfly Weekly, host of the…

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David Griffith is the National Research Director at the Thomas B. Fordham Institute, where he manages or authors reports on various subjects including charter schools, …

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Adam Tyner was a member of the Fordham Institute's national research team from 2017 to 2025. In 2025 he became executive director of the Oklahoma Center for Education Policy at the University of Oklahoma.

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