Universal screening, benchmark assessments, and progress monitoring tools help educators identify students who may need additional support. Those data sources are important pieces of a strong literacy system.

Two students may perform similarly on a screening measure for very different instructional reasons. One student may struggle with phonics patterns. Another may need support with multisyllabic decoding. Another may demonstrate strengths in some word reading skills while showing significant gaps in others. Those distinctions matter because instructional decisions become stronger when educators have clearer information about underlying skill needs.

Our Diagnostic Decoding Surveys help educators take a closer look at decoding performance, enabling more targeted, responsive, and actionable instructional planning across classrooms, intervention settings, and MTSS systems.

Research supporting Diagnostic Decoding Surveys provides important evidence for educators seeking assessment tools that are both instructionally useful and technically sound. 

Researchers from the Center for Reading at Pittsburg State University evaluated Diagnostic Decoding Surveys to examine their validity and reliability as measures of decoding performance. The findings supported the surveys' ability to provide consistent, meaningful information about student decoding skills and instructional needs. 

Assessment tools influence instructional planning, intervention design, grouping decisions, and conversations about student support. Research validation helps strengthen confidence that an assessment measures what it is intended to measure and produces dependable information that educators can use in practice.

Literacy expert Dr. Louisa Moats has also recognized the instructional value of Diagnostic Decoding Surveys, noting their usefulness in identifying specific decoding difficulties and in guiding instructional decision-making.

Together, these findings reinforce an important principle of effective assessment. 

Diagnostic data is most powerful when it helps educators move from identifying reading difficulties to understanding the instructional needs behind them.

Diagnostic Decoding Surveys are designed to help educators examine decoding and word-reading skills more closely. Rather than producing a single broad reading score, decoding-focused assessment can help illuminate patterns within student performance.

Depending on the assessment form and instructional context, educators may gather information related to:

• phonics and sound-symbol relationships
• word reading accuracy
• decoding patterns
• multisyllabic word reading
• instructional strengths and gaps

This type of information can help educators move beyond generalized intervention decisions toward more precise instructional planning.

Instructional planning becomes more targeted when educators understand the skills that may be contributing to reading difficulty.

Diagnostic decoding data can support:

• small group placement
• intervention planning
• instructional targeting
• MTSS implementation
• dyslexia support conversations
• progress monitoring efforts

It can also help schools avoid a one-size-fits-all approach to intervention.

Two students may both struggle with reading while requiring very different instructional responses. More precise diagnostic information helps educators make stronger decisions about what to teach, how to group students, and where instructional time may have the greatest impact.

For district leaders, diagnostic assessment data can also contribute to broader conversations about instructional alignment, intervention systems, and literacy implementation.

Diagnostic Decoding Surveys can support a variety of instructional contexts. 

• Teachers may use diagnostic information to strengthen classroom instruction and small group planning. 

• Interventionists and literacy specialists may use assessment results to guide targeted intervention decisions and monitor student progress over time. 

• District leaders and MTSS teams may use diagnostic data to support conversations about instructional alignment, intervention systems, and literacy outcomes across schools or grade levels.

Multiple survey forms can also support both initial diagnostic assessment and ongoing instructional decision-making.

Knowing that a student is struggling with reading is an important starting point. Understanding the instructional factors contributing to that struggle can make assessment data significantly more useful. Research supporting Diagnostic Decoding Surveys reinforces their value as tools for examining decoding performance, identifying instructional strengths and gaps, and helping educators connect assessment results to instructional decisions.

For schools working to strengthen foundational skills instruction, intervention systems, and MTSS implementation, diagnostic decoding data can support more targeted conversations about:

• what skills need instructional attention
• how students may be grouped for support
• which intervention pathways may be appropriate
• where instructional time and resources may have the greatest impact

When assessment data helps educators move from broad reading concerns toward clearer instructional next steps, it becomes more than a measurement tool. It becomes part of a stronger literacy decision-making process.