After almost a year of learning online, Columbus City Schools students in middle and high school will soon be heading back into classrooms. Students in grades 6, 11 and 12, divided in two groups, will return on March 15 and March 18, according to a Thursday announcement from the district. Meanwhile, students in grades 7, 8, 9 and 10 will return on March 22 and March 25. As part of the plan, all high school students will receive free Central Ohio Transit Authority bus passes to alleviate transportation concerns. These won't replace yellow-bus transportation, but supplement it, Columbus City Schools Superintendent Talisa Dixon said in Thursday's update. The district is using federal grants to buy them, in partnership with COTA, Dixon said.