The Principal Recovery Network, a national network of current and former school leaders who have experienced gun violence tragedies in their schools, have published the Guide to Recovery.  The collection of best practices to assist school leaders in the aftermath of shooting tragedies was released this week by the National Association of Secondary School Principals.   Authors include current and former principals of Sandy Hook Elementary, Columbine High School, and Marjory Stoneman Douglas High School.  Kathy Gombos took over for Principal Dawn Hochsprung, who was among the 6 educators and 20 first-graders killed on 12-14.  She wrote in the guide that recovery was as much about adults as it was children, and will be for a long time. She is working as a resource with educators at Robb Elementary School in Uvalde, Texas, where a gunman killed 19 fourth-graders and two teachers in May.  Among the topics covered are getting the right kind of counseling, reopening the school, holding commemorations, listening to student voices, and recognizing that obtaining support is a sign of strength, not weakness.