An independent third-party study by LXD Research found that students using Just Right Reader’s Science of Reading Take-Everywhere Literacy Packs™ made significantly greater literacy gains than peers using other decodable books after just five months of use.

Proven Results

In early 2025, LXD Research, an independent research organization, conducted a quasi-experimental study to evaluate the impact of Just Right Reader’sTake-Everywhere Literacy Packs™ on early reading development.

The study included 252 kindergarteners using Just Right Reader materials and 177 students in a control group with other or no decodable books. After just five months of use, students using Just Right Reader showed accelerated growth in foundational reading skills.

• ESSA Level 2: Moderate Evidence — meeting federal standards for evidence-based programs.
  

• Cohen’s d = 0.39, representing a moderate, meaningful impact equivalent to more than three weeks of additional learning growth.
  

• p < .001, meaning the findings are statistically significant and highly reliable.
  
  

“Students who were low in reading had confidence that they were able to decode CVC words, and that made them excited for reading.”
—Kindergarten teacher

Accelerated Reading Achievement

Students usingJust Right Reader’s Take-Everywhere Literacy Packs™ demonstrated accelerated growth in early literacy skills in just five months.

• +71-point gain on DIBELS composite scores from midyear to end-of-year, compared to +61 points in the control group. Students using Just Right Reader started with lower scores yet showed greater growth, finishing the year ahead in reading achievement.
  
  

• 46% of students achieved above or well-above average growth, compared to 34% of peers using other materials.
  
  

• Significant improvement across key early literacy domains:
  

• Letter Naming Fluency
  

• Phonemic Awareness
  

• Letter Sound Fluency
  
  

These measurable improvements show that Just Right Reader helps students not onlydecode  words but also build lasting reading confidence and fluency.

Where Joyful Reading Meets the Science of Reading

At Just Right Reader, we believe learning to read should be joyful and that students should have access to high-quality materials that help them become stronger, more confident readers. 

When students practice at school and at home, achievement soars. In this study, students with Just Right Reader decodables took books home and practiced7.5 times more often than those using other decodables.

This combination of effective instruction with joyful, evidence-based materials and consistent practice led to meaningful growth.

“He was not reading on his own before the decodables. He is reading now. He’s moved on from sight words to full sentences.”
—Parent of an English monolingual kindergartener

Empowering Families, Supporting Educators

The LXD research study revealed powerful connections between home and classroom learning, with strong engagement from both families and teachers.

• 75% of teachers reported that students showed increased confidence in reading.
  
  

• 91% of parents said the books were easy for their children to use independently.
  
  

• 88% of parents loved the convenient backpack delivery model and ease of access.
  
  

• 71% of caregivers used Just Right Reader’s multilingual video phonics lessons at home.
  
  

“The QR codes on the books made it very easy to use for both me and my child. Thank you for adding that feature!”
—2nd-grade parent

By connecting learning from school to home throughTake-Everywhere Literacy Packs™, students practiced reading more consistently and built stronger reading habits with family support.

Personalized Phonics Practice

Our evidence-basedTake-Everywhere Literacy Packs™ provide students with the data-driven, explicit phonics instruction and practice they need to become stronger, more confident readers. At the same time, teachers are supported in classrooms, and families are empowered to support literacy at home. 

• Daily, data-driven small-group instruction is explicit, systematic, and tailored to each student’s decoding needs.Instruction starts in the classroom and continues at home and everywhere.

• District customization options include your logo on books and backpacks, and personalized video messages from leadership that highlight your commitment to literacy.

• Customized professional development and teacher resources build confidence, consistency, and long-term success in implementation.

• Family engagement resources, including video phonics lessons in 14+ languages, empower families to confidently support reading at home.

Science of Reading + Family Empowerment = Accelerated Achievement

Just Right Reader is your trusted literacy partner in accelerating student achievement and creating joyful reading experiences for students, teachers, and families. 

Students build confidence.
Teachers see measurable growth.
Families feel empowered to support learning.

Read the research study summary here. 

Ready to Accelerate Reading Achievement in your District?
Meet with our team.