In order to limit the transmission of severe acute respiratory syndrome coronavirus 2(SARS-CoV-2), a significant numbers of measures were taken worldwide. It has been shownthat the pandemic and its consequences, such as lockdown and isolation, can have asignificant long-term impact on the well-being of children.This study follows the initial DYNAtracs study on SARS-CoV-2 transmission in primaryschools. In Belgium, 2488 children and 444 school attenders in 11 primary schools of theFederation Wallonia Brussels are invited. Every participant will be invited to answer awell-being questionnaire. This study aimed to document the children and workerswell-being in the primary schools of Belgium after the COVID-19 pandemic. The results ofthe study should contribute to improved decision making regarding measures for schoolsand children well-being in the context of current and future pandemics.The objective of this study is to document the well-being of children and workers afterthe COVID 19 pandemic in primary schools of the Federation Wallonia-Brussels.