For many teachers, the COVID-19 pandemic meant an instant shift from teaching in traditional to a virtual classroom to reduce the spread of infection. It represents a widespread and intensive case of digitalization of teaching practice and many stakeholders are asking the imminent question of which transformations that ‘will stick’ and become a constant in the ‘new normal’ onwards. However, research of online teaching in a high school context remains limited. In this study, we analyze what happens when teaching is redirected from the traditional to the virtual classroom and explore what characterizes educational affordances in the virtual classroom. The context is 15 high schools in Sweden and the empirical data includes a survey with a total of 1109 teachers. Educational affordances are used as an analytic lens to conceptualize what teaching activities that the virtual classroom afford. The main contribution includes theorizing about what activities, interactions, and procedures that the virtual classroom affords by presenting seven educational affordances and contrast these with teaching in traditional classrooms. The affordances consist of (1) Structure (2) One-to-one communication (3) Formalized reconciliations (4) Peace and quiet (5) Hidden back channels (6) Right time and (7) Reaches certain students. The seven affordances can make a foundation for reflection and discussions of how to create a didactic design adapted for different classrooms. Furthermore, we contribute with implications to teachers and school leaders.