A sign alongside a playground at Hanna Woods Elementary School in the Parkway School District in suburban St. Louis indicates that the playground is closed due to the coronavirus pandemic, Saturday, July 18, 2020. Parkway has formulated a flexible plan to reopen schools when the fall semester begins Aug. 24. Just how bad the virus is at the time will determine if schools open completely, if they mix online and in-person classes, or if they are forced to go strictly virtual. (AP Photo/Jim Salter)Teachers, from right, Jourdan Montgomery and Elizabeth Bradley, both of Jackson, Miss., join a chain of teachers surrounding the Mississippi State Capitol in Jackson, Miss., standing six feet apart during a rally in Jackson, Miss., Friday, July 17, 2020. The group, concerned about returning to school too soon amid rising COVID-19 numbers, is calling for the delayed opening of the schools and for the legislature to fully fund education. (Barbara Gauntt/The Clarion-Ledger via AP)Teachers illustrate the average size of a Mississippi classroom and how only 11 students would be able to fit in it during a rally at the state Capitol in Jackson, Miss., Friday, July 17, 2020. The teachers, concerned about returning to school too soon amid rising COVID-19 numbers, are calling for delayed opening of the schools and for the legislature to fully fund education. (Barbara Gauntt/The Clarion-Ledger via AP)Superintendent Dr. Keith Perrigan shows the new seating configuration on the school buses for the upcoming school year, Thursday, July 16, 2020, in Bristol, Va. A maximun of 22 students can be on the bus. (David Crigger/Bristol Herald Courier via AP)Bristol, Va., Public Schools Superintendent Dr. Keith Perrigan shows some of the items that will be used to clean the school throughout the year Thursday, July 16, 2020, in Bristol, Va. (David Crigger/Bristol Herald Courier via AP)Bristol, Va., Public Schools Superintendent Dr. Keith Perrigan demonstrates Thursday, July 16, 2020, in Bristol, Va., the temperature scanner that will be used at Virginia Middle and High Schools for the upcoming school year. (David Crigger/Bristol Herald Courier via AP)Dusty Lego-style toys are scattered in the playground of an elementary school in Los Angeles, Friday, July 17, 2020. California Gov. Gavin Newsom laid out strict criteria Friday for school reopenings that makes it unlikely the vast majority of districts will have classroom instruction in the fall as the coronavirus pandemic surges. (AP Photo/Jae C. Hong)
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A sign alongside a playground at Hanna Woods Elementary School in the Parkway School District in suburban St. Louis indicates that the playground is closed due to the coronavirus pandemic, Saturday, July 18, 2020. Parkway has formulated a flexible plan to reopen schools when the fall semester begins Aug. 24. Just how bad the virus is at the time will determine if schools open completely, if they mix online and in-person classes, or if they are forced to go strictly virtual. (AP Photo/Jim Salter)
