The purpose of this qualitative study was to explore school personnel's perceptions of school safety and security in order to better understand the lived experience of three distinct personnel groupings: Office personnel serve as gate keepers to the school building, teachers spend the majority of the day with students, and administrators serve as decision makers in school safety and security policies, procedures, and practices. The participants in this study were employees of a single school district in the St. Louis Metropolitan Area. The researcher sought out these participants through purpose and convenience sampling. This qualitative study included interviewing, analyzing, and coding of participants' responses to interview questions specific to their experience as a member of school personnel regarding safety and security. This study was a phenomenological study addressing three research questions: (a) What is the lived experience regarding school safety and security for school employees in accordance with their opinion of safety and security as deployed and maintained within their school building?, (b) What are the school safety and security training methods that school employees perceive to be in line with best practices, and in their opinion, are trainings effective or ineffective, and why or why not? (c) Do the school employee's overall feelings of safety & security increase their perceived job satisfaction and performance? Why or why not?, Seven themes emerged from the interviews: sense of safety, training for staff and students, preferred types of training, school hardening, presence of school resource officer(s), impact on job satisfaction, and impact on job performance. Participants reported a strong sense of safety, preference for live school gun violence simulations for school safety training, appreciation for school resource officers, increased feelings of safety and security due to school hardening with the additions of security vestibules, high job satisfaction, and ability to perform their duties due to feeling safe. [The dissertation citations contained here are published with the permission of ProQuest LLC. Further reproduction is prohibited without permission. Copies of dissertations may be obtained by Telephone (800) 1-800-521-0600. Web page: http://bibliotheek.ehb.be:2222/en-US/products/dissertations/individuals.shtml.]