@incollection{callen2025evidence,
  author    = {Callen, Ian and Goldhaber, D. and Morton, E.},
  title     = {Evidence on the Large Negative and Heterogenous Effects of the Pandemic on Student Achievement},
  booktitle = {Handbook on Inequality and {COVID-19}},
  pages     = {254--277},
  publisher = {Edward Elgar},
  year      = {2025}
}