By BRYAN ANDERSON and HEATHER HOLLINGSWORTH RALEIGH, N.C. (AP) — Within his first week back at school after a year and a half, 7-year-old Ben Medlin was exposed to a classmate with COVID-19, and he was sent home, along with 7,000 other students in the district, for 14 days of quarantine. Not much learning went on in Ben's home. On some days last week, the second-grader was given no work by his teachers.