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What Is Tier 1 in Response to Intervention (RTI) / Multi-Tiered System of Supports (MTSS)?

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Published on

October 28, 2019

Last updated

June 26, 2025

What Is Tier 1 in Response to Intervention (RTI) / Multi-Tiered System of Supports (MTSS)?-featured-image

    At Tier 1, all students receive scientific, research-based core instruction implemented with integrity and emphasizing grade-level standards and school-wide behavioral expectations. Instruction at Tier 1 should be explicit, differentiated and include flexible grouping and active student engagement. To ensure 80% of students’ needs are met at Tier 1, high quality instruction is essential. Features of high quality, research-based instruction include (Chard et al., 2008): 

    • Standards-Based Curriculum: a curriculum based upon the state/district standards. 

    • Systematic Explicit Instruction: Skills are taught from less to more complex using direct, clear and concise instructional language. 

    • Differentiated Instruction: Students have different levels of background knowledge and school readiness; differentiated instruction engages each student in active learning according to his/her needs. The content of instruction, delivery of instruction, and targeted level of instruction can be differentiated. 

    • Flexible Grouping: A combination of whole group, small group, and individual instruction allows teachers to create fluid groups that meet the needs of all students. 

    • Active Student Engagement: Ensuring all students are actively involved during instruction and are not passive recipients; this can be accomplished with high rates of opportunities to respond, ample time to practice skills, and prompt corrective feedback. 

    • Classroom Behavior Strategies: Proactively and explicitly teaching the expected behaviors and routines, frequent use of reinforcement and praise (4:1 positive to negative feedback loop), quick and efficient transition times, and consistent instructional response to misbehavior. 


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    About the author

    Branching Minds

    Branching Minds is a highly respected K-12 services and technology company that leverages the learning sciences and technology to help districts effectively personalize learning through enhancements to their MTSS/RTI practice. Having worked with hundreds of districts across the country, we bring deep expertise in learning sciences, data management and analysis, software design, coaching, and collaboration. Combined with our extensive toolkit of resources, PD, and technology, we provide a system-level solution. We are more than a service or a software provider, we are partners who will deliver sustainable results for educators, and a path to success for every learner.

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