Is Your MTSS Tier 2 Math Intervention Working? Here's How Mathseeds Helps US Schools and Districts Know

Is your MTSS math data proving your interventions work, or just that they happened?

That's the question facing district leaders and school principals across the US, who have a bird's-eye view of dashboards, aggregate scores and trend lines, but can struggle to get to the individual student level and find out whether the intervention is working and the student is responding to the targeted support they're getting.

Failing to answer that question carries a significant systemic weight and, increasingly, compliance implications. ESSA requires that interventions be evidence-based, and a growing number of states now mandate structured math screening, intervention timelines and progress reporting. Right now, a Tier 2 math record is something a district may need to produce for an audit or a school board review.

Rather than waiting for a student to fall behind before stepping in, a Multi-Tiered System of Supports (MTSS) is designed to catch struggling learners early enough to close most gaps before they compound. The framework runs on a three-tier model, and Tier 2 is where the real decisions happen. It's where intervention groups form, where data starts to drive next steps, and where a school finds out whether a student is ready to step back to Tier 1 or needs to move up to Tier 3.

This article looks at how Mathseeds, an evidence-based early math program built for K–3 classrooms, supports that kind of decision-making at every tier, with a particular focus on Tier 2.

For districts weighing where Mathseeds fits into their evidence requirements, it's worth noting that Mathseeds holds ESSA Level II certification, based on NWEA MAP® assessment data showing statistically significant math gains for 1st-grade students who completed more Mathseeds lessons.

The three tiers of MTSS and how Mathseeds supports each one

TIER 1: Universal instruction

Tier 1 is universal, supporting all learners, in a way that every student receives the same high-quality, explicit core instruction, and for roughly 80–90% of a class, that's enough on its own. This is prevention, not remediation; this is catching gaps before they form through universal screening rather than closing them after the fact.

Mathseeds works as a supplemental program at this level.

Its 200 sequential lessons use systematic, explicit instruction to build number sense, operations, geometry, measurement and problem-solving skills, with a curriculum-aligned crosswalk showing how Mathseeds maps to Common Core, TEKS and other state standards.

A placement test starts every student at their own instructional level rather than a fixed grade-level entry point, so instruction stays personalized even at the whole-class stage.

Captivating animations, step-by-step models, and built-in rewards keep students motivated, while real-time reporting gives teachers a running view of how the whole class is progressing, not just whether lessons are being completed. 

Tier 2: Targeted support

Tier 2 is where the answer to "is this working" gets tested.

Tier 2 is where a district finds out whether an intervention program is worth the classroom time it takes. It's small-group, targeted support for students who need extra help, layered on top of core instruction a few times a week, and a student's response here typically determines whether they're ready to exit intervention or need to move to Tier 3.

At 10th and Green Elementary School in Pennsylvania, Principal Susan Lozada saw exactly how that decision-making plays out with Mathseeds. It helps identify which students need to consolidate specific foundational skills, while those who've already mastered the same content move on to extend their number sense and problem-solving, all without a teacher having to build each pathway by hand. As Lozada put it,

"Mathseeds provides data that allows us to pinpoint what the gap skills are, so we can make decisions for students to accelerate their growth."

Her experience highlights what's needed for Tier 2 support to work: teachers need to know exactly where students are struggling and whether they're making progress. Knowing that a gap exists isn't enough; they need to know what the gap is and what support to provide next.

That's where the specific features of Mathseeds come in:

• Pinpoints the exact gap, not the label "behind." From individual student lesson performance to whole-school end-of-map quiz results, Mathseeds features a range of reporting types that highlight specific student struggles and inform next steps. 

• For Tier 2 support, the Skills Mastered report is particularly useful. It shows which students passed each skill on their first, second or third attempt – and which students haven’t yet passed. That makes it easy to see exactly where a student is struggling, whether that’s number sense, division or 2D shapes. A small-group session starts with a clear target instead of a vague sense that "math needs work." A teacher can group three students around the same missing concept instead of guessing who belongs together. 

• Reteaches foundational skills with the same rigour as first teaching. Guided, step-by-step instruction walks students back through a concept systematically, with more repetition and scaffolding than a single classroom pass usually allows. A student who hasn't locked in place value typically struggles with everything built on top of it, so Mathseeds goes back to that foundation rather than pushing forward around it. 

• Builds understanding concretely before it tests it abstractly. Interactive activities let students explore a concept visually and hands-on first. That scaffolding makes it possible to tell the difference between a student who's genuinely understood a concept and one who's only memorized a procedure. 

• Reinforces what the teacher just taught, in the same lesson. A teacher can explicitly teach a concept to a small group, then send students straight to Mathseeds for guided or independent practice on that exact skill while working with another group. The practice reinforces the teaching instead of introducing something new.

• Builds fluency alongside the reteaching. Short, sequenced Mental Minute sessions build fact fluency across addition, subtraction, multiplication, and division in the background, freeing up cognitive space for the more complex reasoning a Tier 2 group is usually working through. 

• Flags gaps early, at the group level and the individual level. Comprehensive, real-time reporting shows a teacher exactly where a student, or a whole intervention group, is struggling, so a corrective plan gets built around actual data rather than instinct, and can be adjusted mid-cycle rather than at the next formal assessment. 

• Keeps students motivated to keep showing up. Built-in rewards and age-appropriate, engaging activities keep Tier 2 students, including those who've lost confidence in math, willing to put in the extra practice, which matters when the whole point of Tier 2 is consistent, sustained effort over weeks, not a single good session.

Using data to drive decisions and engagement to keep students showing up for the extra work – that’s what targeted support can look like with Mathseeds.

Tier 3: Intensive support

Tier 3 is the most intensive layer: individualized, often daily, and usually through close collaboration with a math specialist or learning support teacher rather than in place of one. Only a small number of students, generally under 5%, need this level of support.

While Mathseeds doesn't replace that specialist relationship, it helps extend it through:

• Highly structured, sequential lessons that target specific mathematical gaps. Teachers can assign customized learning paths so a student works on prerequisite skills instead of grade-level content, with transparent feedback that lets them evaluate a wrong answer and try again without stigma. 

• Granular, real-time progress data lets a specialist monitor response to intensive intervention between sessions, rather than waiting for the next formal review. And because Mathseeds fits into intensive intervention blocks, one-to-one sessions, small groups, classroom rotations, or additional practice outside the regular math period, it works with whatever scheduling a school already has in place.

At Tier 3, the same data trail that flagged a gap at Tier 2 carries through, so a specialist starts with a clear picture instead of a blank one.

But why do it? The evidence behind a tiered support system

We've walked through how MTSS works for math, tier by tier. The next question is whether there's evidence it moves the needle, both at the framework level and at the Mathseeds level.

Start with the framework:

• In 2021, the Institute of Education Sciences' What Works Clearinghouse published six evidence-based recommendations for mathematics intervention, based on reviews of research into effective practices for students struggling with math (Fuchs et al., 2021, WWC 2021006). The recommendations emphasise targeted intervention through systematic instruction, the strategic use of visual representations, explicit attention to mathematical language and instructional approaches that can be tailored to students' areas of need. 

• A peer-reviewed study of tiered math support among at-risk second graders found that targeted calculation intervention improved calculation performance, while targeted word-problem intervention improved word-problem performance and some related math outcomes (Powell et al., 2015, Exceptional Children).  

• And as recently as December 2025, the Institute of Education Sciences' Regional Educational Laboratory Northeast & Islands got even more specific: its review of the evidence found that groups of two to three students were the most effective size for Tier 2 math instruction, while noting that group size should also reflect students' needs and the type of math being taught. (IES REL Northeast & Islands, 2025).

Mathseeds-wise, the program holds ESSA Level II evidence certification, based on an independent study conducted across ten elementary schools in one district. K–2 students with high Mathseeds usage showed higher end-of-year NWEA MAP achievement than low-usage peers, and 1st-grade students who completed more lessons showed statistically significantly higher end-of-year math achievement. Third graders who used the program also scored slightly higher than non-users.