Recent school shootings

As we know, this year there has been recent school shootings at Robb Elementary School in Uvalde, Texas where 19 children and two teachers were murdered, at Michigan State University were 4 students were killed, at the University of Virginia where three students were killed, and at Central Visual and Performing Arts High school in St. Louis, Missouri where a student and a teacher were murdered. Here is a recent article in Education Week about the mass school shooting for this year, 2023. School shootings this year: How many and where? https://www.edweek.org/leadership/school-shootings-this-year-how-many-and-where/2023/01 The shocking and tragic mass shootings at our educational institutions including Columbine High School, Sandy Hook elementary school, high school shooting in Parkland, Florida, Oxford High School in Michigan, as well as the college shootings at Santa Monica College, Umpqua Community College, Virginia Tech University, and the University of California, Santa Barbara, have all led school administrators, teachers, staff, parents, and fellow students to ask such questions as "How could this have happened at our school?" "Could we have prevented this tragedy?, and "Why does this keep happening?" It is heartbreaking that these shootings seem so common now that they are almost "normalized" as a part of our daily lives. Many of us are shocked, saddened, and angry, but we unfortunately are no longer surprised. As we know, almost five years ago a mass shooting occurred at a high school in Parkland, Florida in which 17 students were killed. It became evident after the shooting that the shooter was reported 18 times to the local sheriff department about his mental instability and tendency for violence. A mental health professional met with him and did not recommend that he needed to be institutionalized. On November 2, 2022, the Parkland shooter was sentence to life in prison without parole. Many school administrators, teachers, staff, counselors, and psychologists have said that these tragedies could have been avoided. What indicators might be most important in determining whether a student is "at risk" for violent behavior?