Equipping today's children with 21st century skills for the digital age requires turning traditional classrooms into a digital-learning ecosystem and ensuring teachers have professional skills and unfettered access to tools they need for 21st century teaching and learning. School district networks are being used for instruction, business, and information sharing on an ever-increasing scale and are increasingly interconnected. Education technology leaders need to have a solid district-wide network security plan that includes: (1) Policies and procedures addressing network use; (2) Communications and professional development for all school-district stakeholders; (3) Network intrusion prevention measures; and (4) Incident response and mitigation strategies. This report focuses on: (1) Establishing a Holistic Security Strategy; (2) Security Planning for K-12 Education Systems (Fresno Unified School District); (3) Security Operations (Fresno Unified School District); (4) Security Awareness (Miami-Dade County Public Schools); (5) Software Development Security (Baltimore City Public Schools); (6) Communication and Network Security (Seminole County Public Schools); and (7) It's Really a Revolution, Not an Evolution (Broward County Public Schools).