Aaronson, Daniel; Barrow, Lisa; Sander, William - In: Journal of Labor Economics 25 (2007), pp. 95-135
We estimate the importance of teachers in Chicago public high schools using matched student-teacher administrative data. A one standard deviation, one semester improvement in math teacher quality raises student math scores by 0.13 grade equivalents or, over 1 year, roughly one-fifth of average...