Using data from TIMSS 2015, an international large-scale assessment of student skills, I investigate the effect of teacher characteristics on students' science achievement. My identification strategy exploits the feature that in many education systems different science domains (physics, biology,...

Pietro Sancassani prepared this study while he was working at the Center for Economics of Education at the ifo Institut. The study was completed in March 2023 and accepted as a doctoral thesis by the Department of Economics at the LMU Munich. It consists of four distinct empirical essays and...

What makes a good teacher? This is one of the central questions in the economics of education. General teacher qualifications, such as education level or advanced degrees, tend to be poor predictors of teacher quality. Instead, some studies have shown that subject-specific qualifications predict...