After more than a year of COVID-19-crisis and the school closures that followed all around the world, the concerns about decreases in learning growth and exacerbated inequalities are larger than ever. The discussion in this policy paper is based on analyses with unique data that are used to show how one full year of COVID-19-crisis in Dutch primary education has affected learning growth and pre-existing inequalities. Underlying these analyses is a dataset that includes more than 30% of Dutch primary school students from about 1,900 schools, with standardized test scores for reading, spelling and mathematics, as well as rich (family) background information of the students. The data show a lower learning growth after one and a half year for r...