Olivia Marton, an 11th grader at Lincoln Park High School, studies school work with her computer at her home in Chicago, Tuesday, March 17, 2020. Illinois Gov. J.B. Pritzker’s executive order closes all kindergarten through 12th grade schools — public and private — "for educational purposes" from March 17 through March 30, due to caronavirus, with students returning to classes March 31. Some individual districts, and some other states, have chosen to keep schools closed longer than that. (AP Photo/Nam Y. Huh)