In view of the current situation of epidemic prevention and control, Shandong Province has refined and improved the epidemic prevention and control programs of educational institutions in all academic periods, comprehensively investigated potential risks, and refined prevention and control measures, requiring strict implementation, correct understanding, point control, deep excavation, strict control of sources and protection of resources. The secretary and the principal fight according to the ledger wall chart every day, and urge them to implement them one by one, resolutely plug the loopholes and ensure the safety bottom line of school prevention and control.