Assistant principals require specialized training designed to meet their unique professional development needs. The LEAD-17: Leadership Engineering and Design Program offers an innovative approach to addressing assistant principals' professional development needs as they build the skills necessary to be successful school administrators. The LEAD-17 program guides the assistant principal as they strategically and intentionally work to enhance the development of the leadership skills required to serve as an effective principal capable of leading the operational performance and complexities of the 21st-century school culture. From an engineering perspective, the program examines the skills and tools necessary for assistant principals to artfully design, build, create, and monitor innovative schools focused on working collaboratively with stakeholders to advance student learning. The LEAD-17 program serves as an action guide to help participants frame their leadership beliefs and operational tactics to build a leadership legacy reflective of Educational Leaders' Professional Standards (PSEL). Specifically, the program focuses on (1) Building a leadership legacy through self-examination of personal and professional leadership qualities, characteristics, and goals; (2) Engineering the environment through a holistic approach to educational leadership; and (3) Leadership by design, which focuses on intentionally developing the school's infrastructure for sustainable leadership and continuous renewal. The LEAD-17 program guides assistant principals in framing a personal approach to school leadership, permitting each participant to identify, mold, and plan to implement school leadership practices to establish their unique leadership legacy. [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.]