Science of Reading: The Podcast

Science of Reading Essentials: Assessment

Aug 26, 2026
Gina Biancarosa, researcher on comprehension assessment, explains why measuring understanding is tricky. Stephanie Stoller, literacy assessment designer, breaks down screening, diagnostics, and progress monitoring. Jan Hasbrouck, ORF expert and practitioner, clarifies what oral reading fluency truly measures. They discuss assessment purpose, tool alignment, and common misunderstandings in short, practical conversations.
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ADVICE

Screen Multilingual Students In Their Home Language

  • When possible, screen multilingual students in both their home language and English to avoid over-identification.
  • Kajal Patel Below reports Spanish-home kindergarteners flagged 72% in English but only 33% when assessed in Spanish.
INSIGHT

Diagnostic Assessments Tell You What To Teach

  • Diagnostic assessments are deep, fine-grained tools that identify exactly which skill to teach next.
  • Stephanie Stoller notes they are not standardized or brief and are used to plan targeted instruction.
ADVICE

Treat Progress Monitoring Like A GPS

  • Use progress monitoring like a GPS: collect repeated, equal-difficulty data points and look for trends, not single-week changes.
  • Stephanie Stoller warns probes must be equivalent so score rises reflect learning, not easier probes.
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