Low risk is not the same as zero risk. I have not and would not claim zero risk. Here's what the WHO says on the issue. https://www.who.int/news-room/q-a-det

Low risk is not the same as zero risk. I have not and would not claim zero risk. Here's what the WHO says on the issue. https://www.who.int/news-room/q-a-detail/coronavirus-disease-covid-19-schools https://www.who.int/news-room/q-a-detail/coronavirus-disease... >To date, few outbreaks involving children or schools have been reported. However, the small number of outbreaks reported among teaching or associated staff to date suggests that spread of COVID-19 within educational settings may be limited. >...Some modelling studies suggest that school re-opening might have a small effect on wider transmission in the community