Schools across the country are opening their doors to students again. Many have remote options for those who need it. But a handful of states, including New Jersey and Massachusetts, have largely banned remote learning, saying it’s just not effective enough. But as COVID-19 cases continue to rise, more kids may need to quarantine at home — and without remote options, they could miss weeks of school. Marketplace’s Jed Kim speaks with Michael Horn, the founder of the think tank Clayton Christensen Institute. Horn says many school districts face a lot of uncertainty.