Response to Intervention (RTI) is a multi-tiered system of support for providing high-quality instruction and interventions matched to student needs in order to improve learning for all students. It involves three tiers of intervention with increasing levels of intensity, with 80% of students receiving core instruction at Tier 1, 15% receiving supplemental interventions at Tier 2, and 5% receiving intensive interventions at Tier 3. The goals of RTI include preventing academic problems by addressing skill gaps early and determining eligibility for special education. Data on student progress is collected throughout the tiers to make decisions about instruction and intervention.