Since the summer, the simmering state and local debate over reopening K-12 public schools has reflected the nation’s deep partisan divide on the coronavirus, with Republicans favoring openings and Democrats more likely to support a cautious approach.But new scientific evidence showing that in-person learning has resulted in relatively few outbreaks of COVID-19 — combined with growing concerns about learning and social development setbacks for kids — may be closing that chasm.For now, the national COVID-19 surge that is overwhelming hospitals in some states has stalled any further movement towa...