@TechReport{iza:izadps:dp12628, author={Gaggero, Alessio and Haile, Getinet Astatike}, title={Does Class Size Matter in Postgraduate Education?}, year={2019}, month={Sep}, institution={Institute of Labor Economics (IZA)}, address={Bonn}, type={IZA Discussion Paper}, number={12628}, url={https://www.iza.org/publications/dp12628}, abstract={The paper examines the impact of class size on postgraduate grades using administrative data from one of the largest Schools of a Russell Group University in the UK. As well as estimating Fixed Effects models on the population of postgraduate candidates in the School, we exploit a policy change aimed at reducing class size to implement a regression discontinuity design (RDD). We find that class size does impact grades adversely overall; and the policy aimed at reducing class size impacts grades favourably. Our findings are robust to alternative specifications as well as being supported by the validity tests we conducted.}, keywords={grades;class size;higher education;RDD}, }