Decodable Books vs. Levelled Readers: What the Research Says

Walk into any school staffroom and mention 'levelled readers vs decodable books' and you'll have a conversation on your hands. Both approaches have been used widely in classrooms across New Zealand, Australia, the UK, and North America. But the research has become increasingly clear about which approach produces stronger early readers.

Levelled readers (used in Reading Recovery, guided reading programmes, and Fountas and Pinnell) group books by difficulty level. Books at early levels contain short sentences, large print, and illustrations that closely mirror the text. The idea is that readers use multiple cues to read: picture cues, sentence structure, and initial letters, sometimes called the 'three-cueing system'.

The three-cueing model has been comprehensively critiqued by reading researchers. Skilled readers do not primarily use context and pictures to identify words; they decode them phonologically. Education departments across New Zealand, Australia (including NSW, QLD, and SA), the UK, and several US states have updated their reading frameworks to explicitly prioritise systematic phonics and decodable texts over levelled reading approaches.

Decodable books control word selection to taught phonics, maintain a high decoding focus, minimise picture cue reliance, and align to a phonics sequence. They are well-suited for all readers, including those who are struggling. Levelled readers base word selection on frequency and length, have a lower decoding focus, rely heavily on picture cues, have no phonics sequence alignment, and have mixed evidence for struggling readers.

This doesn't mean every book a reader encounters must be decodable forever. As students build fluency and have been taught a full phonics sequence, they transition to authentic texts naturally. But during the phonics learning phase, decodable books provide practice that levelled readers cannot.

Browse Innerlinks decodable books aligned to structured literacy sequences including UFLI Foundations at innerlinks.info.