We are shocked, deeply saddened and angered when senseless violence occurs in schools, hurting children and teachers. What are the best ways to respond? What should you do individually? What is the path forward? Where do we find comfort? What should we do as a community?

George A. Bonanno is a professor of clinical psychology at Columbia University, Teachers College and author of, "The Other Side of Sadness: What the New Science of Bereavement Tells Us About Life After a Loss." Dr. Joyce Valenza is the teacher-librarian at Springfield Township High School. Marilyn Anderson Rhames is a science teacher and Education Week blogger. Nicholas "Nick" Provenzano is a high school English teacher and education commentator.