empty rows of classroom lab desks and chairs

absences absenteeism after assignments back black building chairs class classes classroom clean college collegiate control desks digital distancing down education empty epidemic experimental experiments fashioned floor grade grades group handle high hole hours illness interior lab laboratory labs learning level lined loneliness mandated mandates new old pandemic plastic pushed ready remote requirements room rows school schooling schools science seat shut sickness size sizes small social stand state students tables teaching tiling time topped wood wooden york