After months or years of remote and hybrid learning due to the COVID-19 pandemic, students are benefiting from increased socialization, improved access to services, and a return to their regular routines. For some students, being back in school may mean returning to an environment in which they were bullied. This brief provides an overview of the problem of bullying over mask-wearing, as well as strategies for schools to prevent and intervene in bullying. It explores what educators and administrators might expect as students return to school after their lives were upended by the pandemic, and how to make sure all students return to safe, stable learning environments.