MTSS Overview

What Multi-Tiered System of Supports is and where the para fits

For paraprofessionals and the teachers who supervise them

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| The frameMTSS -- Multi-Tiered System of Supports -- is the organizational framework most US schools now use to match intervention intensity to student need. You will hear the term constantly, often used interchangeably with RtI and PBIS. Understanding what MTSS actually means, how the tiers work, and what paras do within the framework helps paras understand why they are being deployed in certain ways and what data they are contributing to. |

What MTSS is

Multi-Tiered System of Supports is a framework for organizing academic and behavioral support across three tiers of intensity. The core idea: universal, evidence-based practices serve most students well (Tier 1); students who need more support receive targeted group interventions (Tier 2); students with the most intensive needs receive individualized support (Tier 3). The system is data-driven -- students move between tiers based on their response to intervention, not based on disability labels.

MTSS is not a program or a curriculum. It is a framework that schools implement using whatever evidence-based programs they choose. The quality of an MTSS system depends on the quality of the practices it uses at each tier, the consistency of implementation, and the quality of data used to make decisions.

MTSS, RtI, and PBIS -- what is the difference?

These three terms are related but not identical:

Response to Intervention (RtI): an earlier framework focused primarily on academic support, particularly reading. MTSS evolved from RtI by expanding the tiered logic to include behavioral support as well as academics.

Positive Behavioral Interventions and Supports (PBIS): a framework for organizing behavioral support across three tiers. PBIS is often described as the behavioral component of MTSS.

MTSS: the umbrella framework that integrates academic and behavioral support in a coherent, data-driven system.

In practice, many schools use these terms interchangeably. When you hear any of them, the underlying concept is the same: tiers of support matched to student need, driven by data.

The three tiers

Tier 1: Universal supports

Tier 1 encompasses the core instruction and behavioral expectations that every student in the school receives. For academics, this is the core curriculum and instructional practices used in every classroom. For behavior, this is the school-wide positive behavior framework -- the behavioral expectations taught to all students, the acknowledgment systems, the consistent routines.

Approximately 80% of students are expected to meet their needs at Tier 1. When this number is significantly lower, it signals a Tier 1 implementation problem, not a student problem.

Tier 2: Targeted, group interventions

Tier 2 provides additional support for students who are not meeting expectations with Tier 1 alone -- approximately 15% of students. Tier 2 interventions are:

Evidence-based and structured

Delivered in small groups (typically 3-8 students)

More frequent than Tier 1 (often daily or multiple times per week)

Data-monitored with regular checkpoints

Examples of Tier 2 academic supports: a daily 30-minute structured reading intervention group, a math fluency practice group. Examples of Tier 2 behavioral supports: Check-In Check-Out (CICO), social skills groups, structured homework support.

Tier 3: Intensive, individualized interventions

Tier 3 provides the most intensive support for the approximately 5% of students whose needs are not met by Tier 1 and 2 combined. Tier 3 interventions are:

Highly individualized, based on comprehensive assessment

Often one-to-one or very small group

Delivered with high frequency and monitored closely

For students with disabilities, often aligned with IEP goals

Tier 3 for behavior typically involves a formal FBA and BIP. Tier 3 for academics may involve specialized programs (structured literacy, intensive math intervention) delivered by trained personnel.

Para roles at each tier

Tier 1 role

In Tier 1 settings, paras support students with disabilities in accessing core instruction. This includes: implementing IEP accommodations during core instruction, managing AT, supporting participation in school-wide behavioral expectations, and prompting and fading support as students become more independent. The para is not the primary instructor at Tier 1 -- the classroom teacher is.

Tier 2 role

Paras are frequently deployed to deliver or assist with Tier 2 interventions -- running reading or math groups, facilitating CICO check-ins, leading social skills groups. The key is that the para should be trained on the specific program being used and should be delivering it with fidelity. Tier 2 data collected by paras informs decisions about whether students need more or less intensive support.

Tier 3 role

At Tier 3, the para typically works within a plan designed by a specialist (special education teacher, BCBA, reading specialist). The para's job is to implement the plan with fidelity, collect data accurately, and report observations to the team. The para does not design Tier 3 interventions, but they are often the person who delivers them -- which makes their fidelity and data collection essential to the entire system.

How paras contribute to data-based decisions

MTSS is a data-driven system. Paras contribute data at every tier:

Tier 1: attendance, engagement observations, behavior incident data

Tier 2: session attendance, accuracy rates, completion rates, brief behavior checks

Tier 3: trial-by-trial data, fidelity records, progress monitoring scores

This data goes to the team -- the teacher, specialist, or building-level data team -- to inform decisions about tier placement and intervention adjustment. A para who records data carelessly, inconsistently, or not at all is removing critical information from the decision-making process.

Scenario

Understanding where a student fits

A para supports three students in a fourth-grade classroom. She runs a 20-minute reading group with two of them daily (Tier 2). One of the three students has an IEP with individualized reading goals and receives 1:1 structured literacy support from the para for 30 minutes every day in addition to the Tier 2 group (Tier 3). The third student participates in the classroom reading block with accommodations (extended time, read-aloud for content texts) but does not currently receive additional intervention (Tier 1 with accommodations). Understanding the tier framework helps the para understand why her time is allocated as it is and what data she needs to collect for each student.

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| Try this | Watch out for |

| Know which tier each student you support is receiving support at -- it determines what data you collect and what fidelity you are responsible for | Treating all students the same regardless of their tier -- a Tier 3 student needs more intensive and more closely monitored support |

| Deliver Tier 2 programs with training and fidelity -- the program only works if it is implemented as designed | Delivering a Tier 2 program without training and assuming the general approach is close enough |

| Return Tier 2 and Tier 3 data to the team promptly so it can inform the next decision point | Recording data inconsistently or not at all, which makes the team's data-based decisions unreliable |

| Ask the teacher or specialist how your data will be used -- this helps you understand what to prioritize | Confusing PBIS with MTSS or assuming they are entirely separate systems |

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| Bottom lineMTSS is how schools organize their response to the full range of student needs. Your position in this system is significant: you often deliver the most intensive support to the students with the greatest need. Understanding the tier logic helps you see why your fidelity and data matter -- not just for your student, but for the team's ability to make good decisions. |

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