If schools are closed and children have to stay at home they don't spread the disease. They just get it from their parents and don't have any further contacts t

If schools are closed and children have to stay at home they don't spread the disease. They just get it from their parents and don't have any further contacts to whom they could spread it. The statistics during lockdown are pretty solid: Children don't spread it! (As long as you lock them inside with their adult parents - but the statistics may overlook that.) Therefore we must always keep a close eye on the circumstances where the data was taken and what we can and cannot conclude from that.