After the pandemic, many students returned to the classroom behind on reading, as shown by data in the National Assessment for Educational Progress (NAEP). Those students are now adolescents and approaching a critical turning point in their education: They are expected to read with greater independence. For students who are still struggling to catch up in Grades 4-12, this shift can affect every aspect of their education. However, educators do not know how to gauge which interventions may be effective and targeted to a particular student's needs. To fill that need, the Massachusetts Department of Elementary and Secondary Education (DESE) partnered with the Region 1 Comprehensive Center (R1CC) to develop a tool that would help districts identify and implement high-quality interventions in their classrooms--while allowing them the flexibility to choose the right curricula for themselves.