The Kentucky System of Intervention (KSI) is a framework for providing systematic, comprehensive services to address academic and behavioral needs for all students, preschool through grade 12. The Kentucky Department of Education (KDE) has developed this guidance document to provide resources in planning and decision making as districts and schools develop a system of intervention to meet the needs of all students. This guidance document addresses several key points: (1) Decision making rules ensure effective, equitable and fair treatment for all students; (2) Tiered services provide a system of interventions to maximize student achievement and to reduce behavior problems; (3) Intervention team roles enable successful collaboration in meeting the needs of students; (4) Curriculum must be aligned to national, state and local standards and accessible to all students; (5) Highly effective instruction is research based, aligned to curriculum and accessible to all students; (6) Universal screening determines the need for diagnostic assessments that inform decisions made by the intervention team; (7) Progress monitoring informs decisions about instruction and individual student learning; and (8) Family and community engagement is focused on improving student learning. KDE established KSI to assist schools and districts as they develop a comprehensive instructional system, integrating human, physical and financial resources and materials. This comprehensive system addresses Response to Intervention (RTI), accelerated learning requirements (see Appendix E), closing achievement gaps, high-quality instruction, readiness to learn and student transitions. Appendices include: (1) History; (2) Student Intervention System Readiness Tool; (3) Legislation That Created RTI; (4) KSI Crosswalk; (5) EPAS Interventions and Documentation; and (6) Kansas Multi-Tiered System of Support (MTSS). A glossary of commonly used RTI terms is included. Individual sections contain resources.