Denmark began sending its children back to school on April 15, just over a month after Prime Minister Mette Frederiksen issued an extensive nationwide lockdown. They were kept spaced apart in classrooms and on playgrounds, while sanitation measures such as hand-washing stations and deep-cleaning procedures were put into place.

Similar measures were put into place in Finland to keep children from congregating in large groups. The country’s education minister, Li Andersson, predicted that reopening schools would “have a minimal impact on the pandemic, but grand benefits for children.”

Both countries say the pandemic has not spiked since schools re-opened. Cases and deaths in Denmark appear to have peaked in early April. Finland’s infection rate appears to have peaked around the same time, though its death rate remained almost entirely flat throughout the pandemic, aside from two one-day spikes late last month.