Maria Mirkovic works with some of her third graders in her classroom at Christa McAuliffe School in Jersey City, N.J., Thursday, April 29, 2021. Kindergarten through third grade students are returning to their school buildings in Jersey City for their first time in over a year. New Jersey's two largest cities have begun making their return to classrooms in person after working remotely because of the COVID-19 outbreak. Students in Jersey City began returning to school today, just days after Newark officials said they were expanding in-person instruction to four days a week, up from two. (AP Photo/Seth Wenig)