TribLIVE's Daily and Weekly email newsletters deliver the news you want and information you need, right to your inbox. All Ligonier Valley students in grades 7-12 will be able to return to a hybrid instructional model, beginning Tuesday. District officials decided to make the move — to a weekly mix of in-classroom and at-home lessons — following two consecutive weeks when covid-19 transmission rates in Westmoreland County were at state-defined moderate levels, down from previous substantial levels. Many students at Ligonier Valley’s middle school and high school have been learning at home full-time, with online instruction, because of recent heightened covid-19 pandemic concerns.