In middle and high schools, where students interact with multiple teachers and families may struggle to identify a consistent point of contact, advisory can provide a powerful structure for meaningful family engagement. This comprehensive handbook helps school leaders design and implement an advisory model that strengthens relationships, supports student development, and embeds ongoing, two-way family communication into schoolwide practices. Drawing on examples from secondary schools, the resource offers practical guidance on scheduling, staffing, advisor responsibilities, social-emotional learning, family outreach, and systems for tracking implementation. School leaders can use this handbook to build a sustainable advisory structure that connects relationship building, ongoing communication, and academic partnering to support student success.