A Louisville, Ky., classroom sits empty in January 2022, during a COVID surge driven by the omicron variant. Students lost the routine of going to school during the pandemic, and now many are struggling to get back in the habit. Jon Cherry/Getty Images hide caption
ncG1vNJzZmivp6x7r7zRZ6arn1%2Blv7Cz0ZqkrGeRobluwMeipaCrXZi8r7%2FInZyrnZRkf3F%2BkmhnbGdgZ3xyfZVpbmpsYGd9cK3LpWStoJmjtLR5wqilrKGUmr%2BmsIyfpqtlnZa%2FpLSMa2RraGJo