Advances in technological uses within public schools provide increased methods to collect and store non-public personal information (NPI) or personally identifiable information (PII) from both students and employees. Consequently, the sensitive information collected is susceptible to unauthorized disclosure, as various public school employees are trusted to manage and safeguard information. Although the use of technology assists in the protection of public school NPI/PII, the personnel who operate, manage, and access the information must protect the information. However, personnel may not fully understand the various aspects of protecting the information articulated through an information security awareness (ISA) training program. The problem explored in this qualitative holistic multiple case study was ISA-training to reduce the unauthorized disclosure of information within public schools. The purpose of this study was to explore ISA-training through the experiences of public school personnel to reduce the unauthorized disclosure of NPI/PII. The protection motivation theory was the theoretical framework used for this study. Data collection methods for study included 15 interviews from public school teachers and administrators and a review of openly available public school documents related to information security. Interviews were conducted over the telephone using open-ended questions. NVivo 11 software was used to analyze the data. Themes were identified by a cross-case analysis. Results provide valuable knowledge about methods to reduce unauthorized disclosure of information in the public school system. The themes identified included Securing and Effective Training Reduced Unauthorized Disclosure and Becoming Informed Increased Awareness and Compliance. The study results from this study support existing literature on the effectiveness of user training in reducing the unauthorized disclosure of information. It is recommended for future studies to use a quantitative or a mixed-method research design. Additionally, it is recommended that a future study encompass another set of participants with different experiences. The next recommendation for future studies is to assess the factors associated with and the decisions made by education administrators on whether or not an ISA-training program is offered to employees. The last recommendation is to assess behavior exhibited by employees when confronted with an information security dilemma on the handling of NPI/PII. [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://www.proquest.com/en-US/products/dissertations/individuals.shtml.]