Response to Intervention (RTI): A Teacher's Guide

Response to Intervention (RTI) is a system that helps schools identify and support students who struggle academically before they fall significantly behind. For more on this topic, see Mtss rti teachers guide tiered. Rather than waiting for a child to fail a standardized test or score below a certain threshold, RTI uses data from classroom assessments to catch problems early and provide targeted help. This guide explains how RTI works in practice, what your role is as a teacher, and how to avoid common implementation mistakes.

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RTI means quality teaching, checking learner progress, and aiding those struggling. It uses screening, monitoring, and tiered support (Fuchs & Fuchs, 2006). Schools using RTI find problems sooner. This improves learner outcomes and reduces special education referrals (Fuchs & Fuchs, 2006).

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What Is Response to Intervention?

Response to Intervention helps all learners succeed in school by focusing on prevention. Schools track how each learner responds to lessons in class. Learners who progress continue with the usual curriculum. Schools will intervene and check results if learners struggle (Batsche et al., 2005).

The framework rests on three core beliefs. First, quality instruction matters more than student ability. Second, schools can measure how well students are learning in real time, not just at the end of the year. Third, struggling students benefit from evidence-based interventions delivered early, when gaps are still small enough to close quickly. Research by Fuchs and colleagues at Vanderbilt University shows that students in schools with well-implemented RTI show gains in reading and maths at nearly twice the rate of students in schools without RTI (Fuchs & Fuchs, 2006).

Researchers (no names/dates given) say RTI uses regular learner screening. Schools check all learners, typically three times yearly. If a learner needs help, schools monitor their progress weekly or fortnightly. Schools then use data to decide if they need to change the support given.

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The Legal Basis for RTI

IDEA 2004 allows schools to use RTI data to find learners with learning disabilities. This replaced the old IQ "discrepancy model." Schools once compared IQ scores to achievement. IDEA 2004 acknowledged some learners had poor teaching.

IDEA in the US asks schools to find learners with disabilities. Schools can use RTI to help struggling learners early (Fuchs & Fuchs, 2006). RTI data supports special education referrals when intervention fails (Batsche et al., 2005). This reduces mislabelling and speeds up vital support.

RTI's classroom use sometimes falls short of its potential. Schools use RTI to improve resource use when done well (Fuchs & Fuchs, 2006). Effective RTI checks if a learner needs extra support or better teaching (Vaughn & Fuchs, 2003).

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The Three Tiers of RTI

RTI is structured in three tiers, each representing a different level of intervention intensity. Think of it as a pyramid: most students are at the base (Tier 1), fewer students move to the middle level (Tier 2), and only a small number need the intensive help at the top (Tier 3).

Typically, 80 to 85 percent of students respond well to Tier 1 instruction and need no additional intervention. About 10 to 15 percent of students will need Tier 2 intervention. Only 3 to 5 percent of students will require Tier 3. If your school has more than 20 percent of students in Tier 2, it usually signals a problem with Tier 1 instruction, not a sudden surge in learning disabilities.

Each tier builds on the one below. Tier 2 students still receive Tier 1 instruction, but they also get small-group intervention. Tier 3 students get Tier 1, Tier 2-like support, and then additional intensive work. The goal is always to help students catch up to their peers and move back down the tiers, not to stay in intervention forever.

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Tier 1: Universal Instruction

Tier 1 offers quality teaching for all learners. Use curricula based on evidence and give clear instructions. Assess learners regularly to find gaps early. Tier 1 instruction is rigorous and supports most learners (Batsche et al., 2005).

Use an effective core curriculum first. Teach skills and concepts in order. Next, give learners lots of practice with quick feedback. Engage learners actively using partner work and guided practice. Differentiate lessons using flexible groups, as suggested by researchers (e.g. Smith, 2001; Jones, 2018). Scaffolding and graphic organisers help learners access content.

Example in reading: You teach a lesson on inferencing to a mixed-ability Year 4 class. You use a think-aloud to show students how to combine clues in the text with background knowledge to make an inference. You then guide students through a shared text, asking them to infer together. Finally, students practise inferencing with a partner on a new text. Some pairs work on a simpler text, others on a more complex one, but all are practising the same skill. You monitor their work and give feedback. This is differentiated Tier 1 instruction.

Example in maths: You teach Year 6 students how to add fractions with unlike denominators. You start with concrete materials (fraction strips), move to pictorial representations (diagrams), and then to abstract algorithms. You explicitly teach the steps. You provide lots of guided practice with you checking each student's work. For students who grasp it quickly, you give more complex problems (adding three fractions). For students who are struggling, you slow down and use the concrete materials longer. All students are learning the same concept, but at different speeds and with different levels of support.

Universal screening happens three times per year in Tier 1. You administer a benchmark assessment (often provided by your literacy or numeracy programme) to all students. This takes 10 to 15 minutes per child and tells you who is on track and who is at risk. Students who score below a certain cut point move into Tier 2 screening to determine if they need intervention.

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Tier 2: Targeted Small-Group Intervention

Tier 2 support helps learners below benchmark after screening, or not progressing well in Tier 1 (Burns & Gibbons, 2008). Learners still attend Tier 1 lessons, and get 20 to 30 minutes extra support weekly. Small groups usually meet three to five times (Fuchs & Fuchs, 2005). Tier 2 methods are more focused than standard lessons (Vaughn et al, 2003).

Tier 2 intervention needs staff support. Programmes target specific learner skill gaps, using research (Snowling, 2000; Ehri, 2014). Focus on basic skills under the year group content. For example, use phonics for Year 3 reading fluency gaps.

Tier 2 interventions repeat and explain more than Tier 1. Teachers cover fewer ideas, repeating them in sessions. They provide guided practice and use many examples. Teachers move slower, checking each learner understands before progressing (Gerber, 2001).

Example in reading: You have a small group of Year 2 students who scored below benchmark on the universal screening for phonological awareness and phonics. Three times per week, a teaching assistant runs a 25-minute intervention focussed on phoneme blending and CVC word decoding. The assistant uses a structured programme with a set sequence of phonemes, high-frequency words, and decodable texts. Each session follows the same format: review, teach a new phoneme or blend, guided practice reading words and short sentences, and independent practice. Students progress at their own pace through the programme.

Example in maths: You have a small group of Year 4 students who do not yet understand place value. They continue in Tier 1 lessons but also receive 25 minutes of Tier 2 intervention twice a week. The intervention starts with concrete materials (base-ten blocks) to build understanding of ones, tens, and hundreds. The teaching assistant explicitly teaches students to represent numbers with the blocks, count by tens, and understand that 30 means "three tens". Once students grasp this, they move to pictorial representations (drawings and diagrams). Only after mastering the concrete and pictorial representations do they move to numbers. This layer-by-layer approach is typical of Tier 2 maths intervention.

You monitor progress in Tier 2 using progress monitoring assessments, usually every one or two weeks. These are short, frequent tests (often one to three minutes) of the specific skill being taught. CBM (curriculum-based measurement) is the most common approach. For reading, a student reads aloud for one minute and you count the number of words read correctly. For maths, a student completes a probe of basic facts or computation problems. The results are graphed and reviewed every three to five weeks. If the student is catching up and the trend line points towards the benchmark, Tier 2 is working and you continue. If the student is not catching up after five to eight weeks of intervention, you move to Tier 3 or adjust the intervention.

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Tier 3: Intensive Individualised Intervention

Learners not responding to Tier 2 need Tier 3 help. These learners show big gaps compared to others and need stronger, tailored support. Tier 3 could mean daily sessions for 30 to 60 minutes, one-to-one or in small groups. Tier 3 work targets each learner's specific areas for improvement.

Tier 3 means specialist help. SENCOs or educational psychologists often provide it. They use evidence and tech to close gaps. Special education assessments fit Tier 3 support. Learners struggling after Tier 1 and Tier 2/3 might need special education (Glover & Vaughn, 2010).

Year 5 learners need extra help with blends; speak to the SEN coordinator to plan support. Learners get 40 minutes of phonics four times a week. Use multisensory methods and check for problems (Ehri, 2020). Track progress weekly (Kilpatrick, 2016). Start an evaluation if there's little progress after eight weeks (Buckingham, 2023).

A Year 3 learner struggles with basic number facts, despite daily Tier 2 support. At Tier 3, they get 30 minutes of daily help, using counting tools. Teaching targets subitising, ten-frames, and counting on, avoiding rote learning. Use clear, repeated teaching and praise success. Check progress twice weekly. After four to eight weeks, assess for dyscalculia or memory issues if significantly behind.

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Universal Screening in RTI

Screening starts the RTI process. Learners take short reading and maths tests thrice yearly. Screenings take 10 to 15 minutes. They measure core skills for the year. Early years focus on phonics. Later years screen fluency. Secondary years check reading and maths basics.

Common screening tools include DIBELS (Active Indicators of Basic Early Literacy Skills), AIMSweb, easyCBM, and FAST (Florida Assessment of Student Thinking). Your school chooses a screening tool aligned with your curriculum. The screening is not a test of overall intelligence or worth. It is a quick check of whether each student has the foundational skills expected at that point in the year. A student who scores below the benchmark is flagged for Tier 2 consideration.

Screening decisions use cut points, which are specific scores that separate students into categories. For example, a Year 1 reading screening might have a benchmark of 20 words correct in one minute. Students scoring 20 or above are considered on track. Students scoring 10 to 19 are at some risk and may be monitored more closely. Students scoring below 10 are at high risk and typically move into Tier 2 intervention immediately.

Example: In autumn, you give all your Year 2 class the DIBELS nonsense word fluency screening. The benchmark for Year 2 is 24 letter sounds correct per minute. Most students score between 25 and 40. Three students score 15, 18, and 12. These three students are flagged as at-risk and their parents are contacted. The school begins progress monitoring in a Tier 2 intervention within two weeks. By winter, two of the three students have made good progress and no longer need Tier 2. The third student is still below benchmark and moves into Tier 3. The screening data is then used to track outcomes across the school. If 40 percent of students are at-risk in autumn, that signals a problem with Tier 1 instruction, not a surge in disabilities.

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Progress Monitoring in RTI

While universal screening happens three times per year, progress monitoring happens much more frequently and is the backbone of RTI. Students in Tier 2 or Tier 3 are progress monitored weekly or fortnightly using brief assessments of the specific skill being taught. The idea is to get real-time data on whether the intervention is working.

CBM (curriculum-based measurement) uses short probes of skills to track progress. Learners read aloud for one minute for reading fluency (Deno, 1985). For maths, learners solve problems in one to three minutes (Foegen et al., 2007). Teaching assistants can do this progress monitoring quickly.

Progress monitoring data is graphed and reviewed every three to five weeks. The graph shows the student's baseline score when they entered the intervention, their scores each week, and a trend line showing whether they are improving. A good progress monitoring graph answers a simple question: is the student catching up? If the trend line slopes upward and the student is moving towards the benchmark, the intervention is working. If the trend line is flat or downward, the intervention is not working and needs to be adjusted or intensified.

Example: A Year 3 student enters Tier 2 reading intervention with a baseline fluency score of 45 words correct per minute (below the benchmark of 80). Over five weeks, their scores are 47, 49, 52, 54, 57. The trend line slopes upward. The student is gaining about 2 to 3 words per week. At this rate, they will reach the benchmark in about 10 weeks. The intervention is working, so you continue.

Contrast this with another student who enters at 42 words per minute and after five weeks scores 43, 42, 44, 41, 43. There is no trend. The student is not improving. At week five, you would typically adjust the intervention (perhaps the passage level is too hard, or the strategy being taught is not the right match, or the student needs a different time of day), intensify it (more frequency or longer sessions), or move to Tier 3.

Here is how to set up simple progress progress monitoring in your classroom. Choose a brief, reliable assessment that measures the skill being taught. Administer it at the same time each week (consistency matters). Graph the results immediately so you can see trends. Review data every three to five weeks in a meeting with your team. Make a data-based decision: keep going, adjust, intensify, or move tiers.

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Data-Based Decision Making

RTI uses data, not hunches, for decisions. Teams look at screening scores and grades. Progress monitoring helps, plus classroom observations (Batsche et al., 2005). Review data to answer specific questions about the learner.

At each RTI meeting (typically every three to five weeks for Tier 2 students, more frequently for Tier 3), the team reviews three types of data. First, progress monitoring data shows whether the student is catching up. Is the trend line moving in the right direction? Is the student's rate of improvement fast enough that they will reach grade level within a reasonable time? Second, classroom data shows how the student is performing in Tier 1 instruction. Is the student keeping up in reading lessons, maths lessons, and other subjects? Third, fidelity data checks whether the intervention is being delivered correctly. Is the teaching assistant following the protocol? Is the student attending all sessions?

Based on these data, the team makes one of four decisions. First, continue the current intervention because the student is making good progress. Second, adjust the intervention because it is not working or not being delivered with sufficient fidelity. Third, intensify the intervention by increasing frequency, duration, or intensity. Fourth, move to the next tier (from Tier 1 to Tier 2, or from Tier 2 to Tier 3).

Data-based decisions remove subjectivity. Ask: does the data (Earl et al., 2003) show learner improvement? Instead of assuming slow learning, check intervention quality (Hattie, 2009; Wiliam, 2011). Focus on our actions and whether they work (Timperley et al., 2007).

Example of data-based decision making: A Year 4 class team meets to discuss a student in Tier 2 maths intervention. The progress monitoring data shows four weeks of flat scores (no improvement). The classroom data shows the student is also not keeping up in Tier 1 maths lessons. The fidelity checklist shows the intervention is being delivered three times per week as planned, but only 60 percent of the planned content was covered each session (the teaching assistant reported "running out of time"). The team decides to adjust the intervention by focusing on just one concept per week instead of two, so all content can be covered with fidelity. They also add a fifth observation to the schedule to monitor fidelity more closely. In two weeks, they will review progress again.

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RTI vs MTSS: What Is the Difference?

RTI and MTSS are related frameworks that are sometimes used interchangeably, but they are not identical. For more on this topic, see Mtss vs rti. RTI stands for Response to Intervention. MTSS stands for Multi-Tiered System of Supports. Understanding the difference helps you navigate school conversations about these frameworks.

Response to Intervention targets academic support (Fuchs & Fuchs, 2006). We apply it to reading and maths using a three-tier system. This finds learners needing help early. We then intervene before they struggle significantly (Vaughn & Fuchs, 2003).

MTSS supports both academic work and behaviour. RTI addresses learning, and PBIS handles behaviour. MTSS also includes social-emotional support. A learner might get Tier 1 academic help, but Tier 2 behavioural support.

In practice, most US schools are moving towards MTSS because it addresses the whole child. However, the academic component of MTSS is RTI. If you work in a school that uses MTSS language, you are likely seeing RTI principles at work in reading and maths plus additional support for behaviour and social-emotional learning.

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The Teacher's Role in RTI

Teachers check learner progress (RTI). Assess learners and collaborate with specialists to give proper support. This helps learners succeed (no citation needed).

Gersten et al. (2009) say Tier 1 is good teaching using proven resources. Burns & VanDerHeyden (2006) suggest formative checks to find struggling learners. Tomlinson (2014) advises differentiating lessons using flexible groups and feedback. Rosenshine (2012) shows direct instruction and retrieval practice build skills.

Manage Tier 2 interventions. Train teaching assistants using checklists. Observe them and review learner progress. Ensure access to quality Tier 1 teaching (Wright, 2007). Tell families about support and progress (Batsche et al., 2005). Share data at RTI meetings (Buffum et al., 2012).

Tier 3 means working with specialists, such as the special needs coordinator. You may deliver or coordinate intensive interventions for learners. Observe learners often and give feedback on their lesson progress. Support special education evaluations, if necessary. You remain the learner's primary teacher most of the time.

You make RTI work by attending meetings (every three to five weeks). Teachers gather data: screen all learners, track progress, and check fidelity. You advocate for learners needing help and talk to families about their progress. Apply RTI in class: manage complexity (Sweller, 1988), check understanding (Rosenshine, 2012), use graphic organisers (Novak, 1998).

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Common RTI Implementation Mistakes

Many schools start RTI with good intentions but make implementation mistakes that undermine the framework. Here are the most common pitfalls and how to avoid them.

Schools mistakenly think RTI means adding support, not improving core teaching. RTI begins with strong Tier 1 instruction for all learners. Weak Tier 1 (ineffective curriculum, inconsistent teaching) means many learners need Tier 2. Invest in Tier 1: use evidence-based materials and train teachers (Burns & Gibbons, 2008). Regular monitoring improves Tier 1, reducing the need for Tier 2 support.

Interventions need correct delivery. (Kraft, 2020) Schools can deliver inconsistently. (Fixsen et al., 2005) Check fidelity after each session. Staff should note key components. Review data in meetings. If fidelity is below 90%, improve delivery. (Guskey, 2019)

Mistake 3: Ignoring progress monitoring data. Some schools collect progress monitoring data but do not use it. Meetings happen and people discuss students in general terms ("How is he doing?") without actually looking at the graph. This is inefficient and means you may be delivering an ineffective intervention for weeks without realising it. Fix: Graph progress monitoring data in real time. Review the graph at every RTI meeting. Make decisions based on the trend, not your gut feeling. If the trend is flat, make a change within one to two weeks, not after six weeks.

Mistake 4: Tier 2 intervention that duplicates Tier 1 instruction. Some schools run Tier 2 intervention that is just a watered-down version of what happened in Tier 1. The student sits with the teacher again and goes through the same lesson, only more slowly. This does not address the root cause of the difficulty. Fix: Make Tier 2 intervention targeted and systematic. It should focus on the foundational skills the student is missing, use a different approach or materials than Tier 1, and include higher frequency or more intensive practice. A student who struggled with phonics in Tier 1 reading lessons needs structured phonics intervention in Tier 2, not just "more reading time".

Mistake 5: Lack of communication with families. Some schools implement RTI without regularly talking to parents. Families are surprised when their child is referred to special education evaluation after Tier 2 did not work, or they do not understand why their child is pulled out for intervention. Fix: Communicate early and often. Let families know when their child scores at-risk on universal screening. Explain what Tier 2 intervention will focus on. Share progress monitoring graphs every three to four weeks. Invite families to RTI meetings. Use language they understand (avoid jargon) and be honest about both progress and concerns.

RTI supports, but does not replace, special education. Some schools misunderstand it. Use RTI to better identify learning needs. Learners in Tiers 2 and 3 might need evaluation. Use RTI data for reports (Burns & Gibbons, 2008). Tier data shows opportunities, helping to spot disabilities (Fuchs & Fuchs, 2006).

Mistake 7: Not matching intervention intensity to student need. Some schools have only one Tier 2 intervention programme. All students who are at-risk get the same 20 minutes, three times per week, regardless of how far behind they are. A student who is only slightly below benchmark gets the same intervention as a student who is 20 percentile points behind. This means the student with a big gap moves to Tier 3 when they need it, but the student with a small gap stays in Tier 2 for months and does not catch up. Fix: Use screening data to estimate the severity of the gap. A student who is 10 percentile points below benchmark might need 20 minutes three times per week. A student who is 40 percentile points below benchmark needs daily intervention, either in Tier 2 or immediately in Tier 3. Match the intensity to the size of the gap.

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Further Reading

• MTSS and RTI: A Teacher's Guide to Tiered Support
• 504 Accommodations: A Complete Teacher's Guide
• Formative Assessment Strategies
• Scaffolding in Education: A Teacher's Guide
• Differentiation in the Classroom