The Comprehension Problem Isn't Comprehension. It's Fluency.

A major new meta-analysis should change how we think about reading fluency and comprehension in primary schools. The headline finding: most comprehension interventions don't transfer.

Hansford, Garforth, McGlynn and King screened over 1,500 studies and analysed the effect sizes for every mainstream comprehension approach: vocabulary instruction, content-rich teaching, cognitive strategies, metacognitive strategies, reciprocal teaching, morphology and graphic organisers.

Here are the effect sizes on standardised tests. Vocabulary instruction: .22. Content instruction: .11. Cognitive strategies: .21. Metacognitive strategies: .06. Graphic organisers: .15. Only reciprocal teaching showed a meaningful transfer effect at .45. And even that figure shifted depending on student age, academic need, duration and research quality. Every result depended entirely on context.

Put simply: test children on something that mirrors what you just taught and the results look reasonable. Use an independent measure and most of the gain evaporates.

Reading fluency is the gatekeeper

If comprehension operated as a transferable skill, genuine instructional gains would show up regardless of the assessment. They don't. The research points clearly to why.

David Didau, analysing the same meta-analysis, argues that reading comprehension is not a single, teachable skill. It emerges from decoding fluency, vocabulary, background knowledge and inference all firing together. You cannot isolate it. You cannot teach it directly.

His first recommendation for schools: secure the foundations first. When decoding remains fragile and reading stays slow, comprehension work gains no traction. No amount of predicting or summarising compensates for effortful word recognition.

That is the reading fluency argument. Decades of research support it.

A child who reads slowly spends all their working memory on recognising words. Nothing remains for inference, for tracking references, for building meaning across sentences. By the end of a paragraph, the beginning has gone. Fluency acts as the gatekeeper. Until children read fluently, everything else schools attempt for comprehension builds on sand.

Ofsted made the same point in 2024: teachers over-use reading comprehension questions and this does not build pupils' reading fluency. A meta-analysis screening over 1,500 studies now confirms it at scale. For more on why comprehension questions don't build fluency, see our practical guide for classroom teachers.

Focus on fluency instead

Not speed. Not timed reading races. Fluency means automaticity and prosody working together. A child reading with phrasing, expression and pace that sounds like talking, not decoding.

Rasinski's research consistently demonstrates that schools focusing on fluency improve not just rate and accuracy but comprehension alongside them. Young and Rasinski found that readers' theatre improves word recognition, phonics and comprehension simultaneously. The fluency work does the comprehension work.

The DfE agrees. The 2026 white paper introduces statutory fluency assessment from 2027. The government, Ofsted and now this meta-analysis all converge on the same point: the missing piece between phonics and comprehension is reading fluency.

Most schools assess decoding. Most schools assess comprehension. Very few systematically assess the bridge between the two.

If your children decode accurately but can't comprehend, the answer probably isn't more comprehension questions. Listen to them read. Ask yourself: does this sound like language?

Start with our free 2-Minute Fluency Spot Check. A one-page guide to what to listen for. No email required.

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References

Hansford, N., Garforth, K., McGlynn, S. and King, J. (2026). Reading comprehension: a meta-analysis comparing standardized and non-standardized assessment results. Discover Education. https://doi.org/10.1007/s44217-026-01140-6

Didau, D. (2026). Is reading comprehension even a thing? The Learning Spy (Substack), 24 February 2026.

Ofsted (2024). Curriculum research review: English.

Rasinski, T.V. (2010). The Fluent Reader (2nd ed.). Scholastic.

Young, C., Durham, P., Miller, M., Rasinski, T. and Lane, F. (2019). Improving reading comprehension with readers theater. Journal of Educational Research, 112(5), 615–626.

Department for Education (2026). Every Child Achieving and Thriving. White paper, February 2026.

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Got questions about fluency practice or assessment?

Drop me an email: simon@readingfluency.co.uk

Or find me on LinkedIn: Simon Sharp