Tier 2 vs Tier 3 reading intervention
By the IEP Atlas editorial teamLast updated
Short answer
Tier 2 is a standard small-group program for students who share a skill gap. Tier 3 is more intensive and is built from one student's own data after tier 2 did not work. The deciding test: did this student fail to respond to a well-run tier 2 program? If yes, the next step is tier 3, planned around that student's diagnostic data.
Tier 2 and tier 3 both add reading instruction on top of core classroom reading. The difference is how the instruction is chosen. Tier 2 uses the same validated program for a small group with a shared need. Tier 3 starts from the individual student: diagnostic data shows what is breaking down, and the plan is adjusted, often more than once, until the graph moves.
The National Center on Intensive Intervention (NCII) calls that tier 3 cycle data-based individualization: a validated program, progress monitoring, diagnostic assessment, adaptation and more monitoring.[1] The reading intervention pillar covers the whole system. This page is about telling the two layers apart.
The deciding question
Ask: has this student had a well-run tier 2 program, with good attendance, and still not made enough progress?
- If no, the answer is tier 2 (or fixing the tier 2 the student has).
- If yes, the answer is tier 3: more time, a smaller group and instruction shaped by the student's own diagnostic data.
The phrase "well-run" matters. Before calling a student a non-responder, check that sessions happened as scheduled, the program was taught as designed, and the student attended. A flat graph from 12 missed sessions is not evidence that tier 2 failed.
Side-by-side table
| Tier 2 | Tier 3 | |
|---|---|---|
| Who gets it | Students below the screening cut point | Students who did not respond to tier 2, or who screen far below benchmark |
| Group size | Usually 3 to 5 | Usually 1 to 3 |
| Typical time | 3 to 5 sessions a week, 20 to 40 minutes[4] | Daily, often 45 minutes or more, set locally |
| How instruction is chosen | A standard, validated program matched to the group's skill gap | A validated program adapted from the student's diagnostic data |
| Diagnostic assessment | Brief, to place the student in the right group | Detailed, repeated whenever the data stalls[3] |
| Progress monitoring | At least monthly; many schools check every 1 to 2 weeks[4] | Weekly |
| Who delivers it | Classroom teacher, interventionist or trained para under supervision | Reading specialist, interventionist or special educator |
| Who decides | School data team, using district rules | School data team, often with the school psychologist |
| Basis in law or practice | District MTSS or RTI plan; not defined in federal law | District plan; also not defined in federal law, and not the same as special education |
| Where it is documented | Intervention plan and progress graph | Individual intervention plan, graph and change log; may feed an evaluation |
How tier 3 is more intensive
NCII's taxonomy of intervention intensity gives a vocabulary for what "more intensive" means. It rates an intervention on dimensions such as its strength (evidence of effect), dosage (group size, minutes and number of sessions), alignment with the student's needs, attention to transfer, comprehensiveness of the instruction, behavioral support and individualization.[2]
That list is useful in a data meeting. When a student is flat in tier 2, the team picks the dimension to change. Dosage is the easiest to change: a group of 5 for 30 minutes four times a week is 120 minutes of shared time; a group of 2 for 45 minutes five times a week is 225 minutes with far more turns per student. Alignment is the most often missed. A fluency program will not fix a short-vowel decoding gap, however many minutes it gets.
Examples by skill
| Skill gap | Tier 2 example | Tier 3 example |
|---|---|---|
| Letter sounds (kindergarten) | Group of 4, 20 minutes, 4 days, scripted letter-sound lessons | Group of 2, 30 minutes daily, sounds the student misses taught first, with daily 1-minute checks |
| Short-vowel decoding (grade 1 to 2) | Group of 5, 30 minutes, decodable text program | Individual or pair, 45 minutes daily, word chains on the 2 vowels the student confuses, error correction on every word |
| Fluency (grade 3) | Repeated reading with a partner, 3 days a week | Daily repeated reading with modeled phrasing, plus a decoding check for multisyllable words |
| Multisyllable words (grade 5) | Syllable-type lessons in a group of 5 | Pair, daily, syllable division with spelling, using words from the student's science text |
Three classroom scenarios
All three students are fictional.
Ava, grade 1. Ava scored below the cut point in fall. After 8 weeks of a tier 2 decoding group with 96% attendance, her four most recent probes all fall below the goal line. Answer: tier 3. She had a well-run tier 2 and did not respond. The team gives a phonics survey, finds she cannot blend sounds in four-sound words, and builds a daily pair lesson around blending.
Marcus, grade 3. Marcus has been in a tier 2 fluency group for 10 weeks. His graph is flat. The attendance log shows he was pulled for speech therapy during 9 of 30 sessions. Answer: stay in tier 2 and fix the schedule. He has not had the tier 2 the plan described, so the data cannot show whether it works.
Priya, grade 4. Priya reads at the 3rd percentile on the fall screener, far below every peer in her grade, and her teacher reports she cannot read most first-grade words. Answer: many districts allow direct placement in tier 3. Waiting 8 weeks in a group of 5 that targets a much higher skill would lose time. Her school's MTSS plan allows the data team to place students this far below benchmark straight into intensive support.
Tier 3 is not special education, and RTI cannot delay an evaluation
In most districts, tier 3 is still general education. A student does not need an IEP to get it, and getting it does not make the student eligible for special education. Some districts fold special education services into their description of tier 3; check your own MTSS plan.
Moving to tier 3 is often the point when a team should consider whether the student may have a disability. Federal guidance is clear that a school cannot use RTI to delay or deny an evaluation of a child suspected of having a disability, and a parent can request an evaluation at any time.[5] For a suspected specific learning disability, if the student has not made adequate progress after an appropriate period of time, the school must promptly request parental consent to evaluate.[6] States set their own learning disability criteria, and some use the student's response to intervention as part of them.[7]
When a student needs both
A student can be in tier 3 for one skill and tier 2 for another. A third grader might get daily intensive decoding support while sitting in a tier 2 vocabulary group with classmates. A student with an IEP may also join a tier 2 or tier 3 group that matches an IEP goal. The goal and the group probe should use the same unit, so one graph answers both questions. The reading IEP goals library has matching templates, such as phonics and decoding goals.
Next steps
- See what a tier 2 term looks like in tier 2 reading intervention.
- Regroup students by skill using grouping students for reading intervention.
- Set the probe schedule with the reading intervention progress monitoring schedule.
- Look up RTI and MTSS in the glossary.
Frequently asked questions
How long should a student stay in tier 2 before moving to tier 3?
Most district plans review tier 2 data every 6 to 10 weeks. A student whose recent probes stay below the goal line after a well-run program, with good attendance and at least one planned change, is usually considered for tier 3. The exact rule is set locally.
Is tier 3 the same as special education?
Not in most districts. Tier 3 is intensive general education support. Some districts describe special education as part of tier 3, so check your MTSS plan. Either way, a parent can request a special education evaluation at any time.
Can a student skip tier 2 and go straight to tier 3?
Many districts allow it for students who screen far below benchmark. Placing a student who reads well below grade level into a group that targets a much higher skill wastes time. The district MTSS plan states the rule.
Use it in IEP Atlas
- RTI in the IEP glossary
- MTSS in the IEP glossary
- Reading IEP goals
- Phonics and decoding goals (reading)
Related guides
- Reading intervention for students with IEPs: assess, group, teach, monitor
- Tier 2 reading intervention: what it looks like
- Grouping students for reading intervention
- How long to run a reading intervention before changing it
- Diagnostic reading assessment after screening
- Reading intervention games
Sources
- What Is Data-Based Individualization?, National Center on Intensive Intervention
- What Is the Taxonomy of Intervention Intensity?, National Center on Intensive Intervention
- Diagnostic Data, National Center on Intensive Intervention
- Assisting Students Struggling with Reading: Response to Intervention (RtI) and Multi-Tier Intervention in the Primary Grades, What Works Clearinghouse, Institute of Education Sciences
- OSEP Memo 11-07: Response to Intervention (RTI) (January 21, 2011), U.S. Department of Education, Office of Special Education Programs
- 34 CFR §300.309: Determining the existence of a specific learning disability, U.S. Department of Education (IDEA website)
- 34 CFR §300.307: Specific learning disabilities, U.S. Department of Education (IDEA website)
Written and checked by the IEP Atlas editorial team under our editorial policy. This guide describes general practice and federal rules. It is not legal advice; your state may add requirements, and the IEP team makes the decisions for each student.