WACO, Texas - A Central Texas school district closed its schools until after the Labor Day holiday Tuesday after two teachers died last week of COVID-19.Connally Independent School District officials closed its five suburban Waco schools for the rest of the week after the Saturday COVID-19 death of Natalia Chansler, 41, a sixth grade social studies teacher at Connally Junior High School, said Assistant Superintendent Jill Bottelberghe.Chansler's death came days after David McCormick, 59, a seventh grade social studies teacher at Connally Junior High, died of COVID-19, Bottelberghe said.It was not immediately known if either teacher was vaccinated.FILE - A custodial worker cleans a table in a classroom at an elementary school in Leander,.