that's when carl peterson opened fire killing fellow student they are davis pick you do not speak individual about students or employees. >> the next 14 press conference, this was as far as the former superintendent scott murphy would go. >> boasberg stick but individuals to issues. >> the court identified three key areas with the district failed come in" trading a threat assessments and systems thinking. >> really -- these are two of the university of -- principal and scott murphy and the superintendent. >> there were many different opportunities for intervention could've taken place in this case. we are not taking advantage of and not pursued. research researchers identified the concerning behaviors behind his time in the school district. it also shows many incidents were not noted. even the reports and some administrators knew of them, the deposition shown assessment training, assistant principal -- 's school psychiatrist esther song saying i assumed that all administrators have been trained. as the lack of document types of the davis' attorney asked his job was it input information. assi

findings about the tragedy and 9news crime and justice supporter anastasia bolton joins us now. carl peterson shot claire davis and then killed himself. davis died eight days later. the report found school and district officials committed three major failures before the shooting. they didn't share what they knew about the would be shooter among themselves or with law enforcement. they didn't have an effective plan to assess the threat posed by the student. and they committed repeated errors in thinking that left the shooter free to carry out the attack. three months before the shooting the shooter threatened to kill a teacher after being removed as a captain of the debate team. but the following threat assessment was seriously flawed and the process did not include the police officer assigned to the school. according to the report, the report's author said a better -- if better assessment had been done, the shooting, quote, might have been interrupted. the report was completed by the center for the study of preventional violence at c.u. as you have mentioned, one of the three that was made pu