Research & Evidence

Connect to Literacy™ is built on extensive research into how students learn to read and acquire a new language.

The results hold up: independent studies show measurable gains in reading growth, state reading achievement, and English language proficiency when districts implement our solutions with fidelity.

Evidence at a Glance

Tier II

ESSA Evidence

+14.4 pts

On STAAR® Reading

+8.1 pts

More Students at Advanced Levels

26%

Greater Reading Growth

Evidence That Shows up in Student Outcomes

Connect to Literacy™ is Summit K12's English language and literacy development solution for multilingual learners. Founded on strong research, it integrates structured literacy, academic language development, formative assessment, and personalized learning in one instructional system that drives measurable outcomes for Multilingual Learners in more than 1k districts nationwide.
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Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Impact Studies, Grades 2–8

Connect to Literacy™ has been evaluated in four studies with comparison groups, measuring MAP Reading, STAAR Reading, and TELPAS outcomes for multilingual learners in grades 2–8.
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Review the Impact Studies
Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Results From Partner Districts

Partner districts across the nation share their outcomes in our Success Stories. And when districts implement with fidelity, we guarantee measurable growth.
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Explore Success Stories

Independent-Style Impact Studies

Several independent studies have followed multilingual learners in one of the nation's largest urban school districts. Across three outcome measures, students using Connect to Literacy™ outperformed matched peers.

Positive findings have shown up across nearly every student group and instructional setting.

Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Study 1 · 2025–26 · ESSA Tier II

More Students Met Their MAP Growth Targets

Multilingual learners using Connect to Literacy™ were more likely to meet their NWEA MAP Reading projected growth targets than matched peers (60.5% vs. 56.5%).

  • Met Projected Growth: 60.5% vs. 56.5% (+4.0 pts, p < .001)
  • High usage (624+ minutes): 62.2% vs. 56.1% (+6.1 pts, p < .001)
  • Strongest outcomes for students with sustained implementation
  • Positive findings across nearly every student group and setting
Bar chart: 60.5% of Connect to Literacy users met MAP Reading Projected Growth targets vs. 56.5% of matched controls, a 4.0 percentage point advantage (p < .001)

Independent quasi-experimental evaluation · 12,189 students · 9,344 matched pairs · 85.2% of eligible treatment students retained · Meets WWC baseline-equivalence standards

Read the MAP Snapshot
Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Study 2 · 2025–26 · ESSA Tier II

Stronger Results on Every STAAR Reading Measure

Multilingual learners using Accelerate to Literacy, a Connect to Literacy™ module, outperformed matched peers on every STAAR Reading outcome measured.

  • STAAR Progress Measure: 75.5% vs. 61.1% (+14.4 pts)
  • On Track: 42.9% vs. 35.8% (+7.1 pts)
  • Meets or Masters: 34.5% vs. 30.3% (+4.2 pts)
  • +32 scale-score points, +14.8 points of growth, and +50.8 Lexile
Bar chart of 2025 to 2026 STAAR performance: Connect to Literacy users vs. matched comparison on Meets/Masters (34.5 vs. 30.3), Masters (10.9 vs. 6.7), Progress Measure (75.5 vs. 61.1), and On Track (42.9 vs. 35.8)

All differences p < .001 · Independent quasi-experimental evaluation · 13,626 students · 11,877 matched pairs · 97.6% retained · Meets WWC baseline-equivalence standards

Read the STAAR Snapshot
Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Study 3 · 2025–26 · ESSA Tier II

Gains in All Four TELPAS Language Domains

Multilingual learners using Connect to Literacy™ made significant English language proficiency gains on the TELPAS Composite and in all four language domains.

  • Reading, Advanced/Advanced High: 49.1% vs. 41.0% (+8.1 pts)
  • Writing: 25.9% vs. 20.6% (+5.3 pts)
  • Speaking +4.2, Composite +3.7, and Listening +1.7 pts
  • Higher average scale scores in every domain (+20 to +31)
Bar chart of TELPAS Advanced/Advanced High attainment, Connect to Literacy users vs. matched controls: Composite 47.3 vs. 43.6, Reading 49.1 vs. 41, Writing 25.9 vs. 20.6, Speaking 38.3 vs. 34.1, Listening 66.3 vs. 64.6

Domain differences p < .001 · Independent quasi-experimental evaluation · 18,158 students · 15,569 matched pairs · 95.7% retained · Meets WWC baseline-equivalence standards

Read the TELPAS Snapshot
Connect to Literacy ESSA Tier 3 Evidence badge

Study 4 · 2024–25 · ESSA Tier III

26% More MAP Reading Growth With High-Fidelity Use

In a 2024–25 analysis of 19,100 multilingual learners in grades 2–8, students who used Connect to Literacy™ with high fidelity showed 26% greater MAP Reading growth than peers with lower or no use.

High fidelity meant at least 3,200 minutes across the year (about 100 minutes per week) and 50 or more Language Foundation Skills lessons aligned to the Science of Reading. Gains were statistically significant for Hispanic, economically disadvantaged, male, and female students, and in grades 5, 7, and 8. Among high-fidelity users, the share of students at the TELPAS Beginning level fell from 44.8% to 21.6% in one year.
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Correlational study with a comparison group · 19,100 students · Significant at the 99% confidence level · Meets ESSA Tier III (Promising Evidence)

More Use, More Growth

Implementation matters. That is why every Summit K12 partnership includes launch support, instructional coaching, and usage data that help campuses reach recommended dosage.

In every study, the students who used Connect to Literacy™ most consistently grew the most.

  • In 2024–25, Connect to Literacy™️ MAP Reading growth was linked to usage:
    At 1,250+ minutes and 20+ lessons, the advantage rose to +18%
    At the 3,200 minutes and 50 lessons, it reached +26%
  • In 2025–26, students meeting the recommended 624-minute threshold had the largest MAP Reading Projected Growth advantage +6.1 points.

How We Measure Impact

We hold our research to the rigorous standards district leaders use to evaluate programs.

  • ESSA Evidence Tiers.
    Tier II (Moderate) requires a well-designed quasi-experimental study with statistically significant positive effects.
    Tier III (Promising) requires a well-designed correlational study with statistical controls.
  • Quasi-experimental, matched comparison.
    Each Connect to Literacy™ student is paired with a similar student in the same district who did not use the program.
  • Baseline equivalence.
    Evaluators confirm matched groups started out similar, using the What Works Clearinghouse benchmark (standardized mean diff. of < 0.25).
  • High retention.
    Our 2025–26 studies kept 85% to 98% of eligible students in the final analysis.
  • Statistical significance.
    A result of p < .001 means there is less than a 0.1% chance the difference occurred by chance alone.

Our studies to date come from one large urban Texas district. We are expanding research to additional states and assessments, including WIDA ACCESS and ELPAC.

Grounded in Three Bodies of Research

Connect to Literacy™ and its Accelerate to Literacy™ module are designed from three bodies of research on how multilingual learners build language proficiency and literacy.

Science of Reading

Explicit instruction in phonemic awareness, decoding, encoding, syntax, and morphology, delivered through a multilingual lens.

Second Language Acquisition

Language develops through structured practice across listening, speaking, reading, and writing, with scaffolds matched to each student's proficiency level.

Science of Learning

Personalized pathways, retrieval practice, and immediate feedback keep every student working at the right level.

Aligned to Title I and Title III Funding

Connect to Literacy™ helps districts braid Title I and Title III funds through a single evidence-based instructional system.

Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Title I Supported Uses

  • Supplemental literacy intervention
  • Evidence-based support
  • Closing achievement gaps
  • MTSS and RTI intervention
  • Data-driven improvement
Connect to Literacy ESSA Tier 2 Moderate Evidence badge

Title III Supported Uses

  • English language acquisition
  • Academic language development
  • Professional learning tied to ELD
  • Newcomer and long-term English learner supports
  • Reclassification readiness

Frequently Asked Questions

Is Connect to Literacy™ an ESSA evidence-based program?

Yes. Three independent 2025–26 quasi-experimental studies of Connect to Literacy™ found statistically significant positive effects on MAP Reading, STAAR Reading, and TELPAS outcomes, supporting ESSA Tier II (Moderate Evidence). A 2024–25 correlational study meets ESSA Tier III.

What ESSA tier is Connect to Literacy™?

Connect to Literacy™ is supported by ESSA Tier II (Moderate) evidence from matched-comparison studies that meet What Works Clearinghouse baseline-equivalence standards.

Who was included in the studies?

Multilingual learners in grades 2–8 in a large urban Texas district, at every English proficiency level from Beginning to Advanced High. In the 2024–25 study, 84% of students were Hispanic and 90% were economically disadvantaged.

How much do students need to use Connect to Literacy™ to see results?

Growth increased with use in every study. We recommend at least 100 minutes per week. In 2025–26, students with 624+ minutes had the largest MAP Reading advantage, and in 2024–25 the full 26% advantage appeared at 3,200+ minutes and 50+ Language Foundation Skills lessons.

Does Connect to Literacy™ improve state reading test scores, not just English proficiency?

Yes. In the 2025–26 STAAR study, users scored 32 scale-score points higher on STAAR Reading Language Arts and were 14.4 points more likely to meet the STAAR Progress Measure than matched peers.

Do the studies apply outside Texas?

The studies to date took place in Texas, using MAP Reading, STAAR, and TELPAS. Connect to Literacy™ is aligned to ELP assessments nationwide, including WIDA ACCESS, ELPAC, AZELLA, and ELPA21, and we are expanding our research to other states.

Where can I read the full studies?

Each study on this page links to its full research brief (PDF), including study design, sample sizes, and results by student group.

Can Connect to Literacy™ be funded with Title I or Title III?

Connect to Literacy™ is designed to support allowable uses under both Title I and Title III, including literacy intervention, English language acquisition, and professional learning. Confirm specific uses with your state.

How is this different from your growth guarantee?

Research shows how Connect to Literacy™ performs across thousands of students. Our guarantee is a commitment to your district: when implemented with fidelity, each student grows at least one proficiency level per year, or you receive a refund or credit.