Share resources. Suggest developmentally-appropriate activities for parents to do with their kids while they're not in school (Examples: Principal Distance Learning Resources, International Educator Shared resources for Virtual Learning in Emergency School Closure, and Lansing School District).
Update often. Teachers and instructors' plans will likely change - keep students and parents up to date when that happens (Example: University of Washington, Humanizing Online Teaching from St. Mary's College of California, and Binghamton University).
Be specific. Give information about what's going to happen and when (Examples: Harvard University, Brockenhurst College, and The Washington Office of Superintendent of Public Instruction).
Be accurate. Share information that's been vetted by experts (Examples: New York Department of Health and New York State Department of Education, Traverse Bay Area Intermediate School District, and Alamo Colleges District).
Upper Grand District School Board Crisis Communication Protocol, National Association of Independent Schools: Crisis Communications Strategies for an Always-On Media Environment, Blackbaud: Crisis Communication Planning for Heads of Schools, The Complete Crisis Communication Management Manual for Schools: Using Social Media in an Emergency, Pennsylvania School Boards Association: Video EDition: Urgent and Crisis Communications for School Districts: Best Practices