Yes. The consequences of setting back an entire generation of children's education and stunting their social growth far outweigh the dangers of letting them return to school, particularly those in elementary school who are unlikely to become ill or pass along the disease.
I'm certain anyone in the health sector could tell you they could still be a significant vector of the disease, enough to hamper all the effort that has been done against it. The return of children to schools also inevitably means more movement of adults.
Still, you bring a good point with the social development of children. Even then, we should at least give time until the end of the year to see how much things improve.
My bet with The_Liquid_Laser: I think the Switch won't surpass the PS2 as the best selling system of all time. If it does, I'll play a game of a list that The_Liquid_Laser will provide, I will have to play it for 50 hours or complete it, whatever comes first.