Public schools reopened for in-school learning Monday after being closed since mid-November. Public school doors reopened for preschool students and children in kindergarten through fifth grade whose parents chose a mix of in-school and remote learning. Overall, the city counts about 1 million public school students; most have opted to learn from home this fall. Masks and social distancing are required at all city schools. About 190,000 students were eligible to return to school buildings starting Monday.