The dataset is part of the results of the research project ‘Kinderen in de Samenleving (KidS)’ (Children in Society). Chinese-Dutch group is one of the target groups in this project. Half of the data of the underrepresented Chinese group was collected before the outbreak of COVID-19, and a half afterward. It, therefore, can be seen as a natural experimental research to understand Chinese-Dutch child ethnic prejudice differences under the impact of COVID-19.