What is the science of reading? A practical guide for teachers

The science of reading is a large body of research, built over several decades, about how children learn to read and how reading should be taught. It draws on cognitive psychology, linguistics, education research and neuroscience. Some of it describes how skilled reading works in the brain; much of it tests which teaching approaches lead to better results for children.

It is not a single program, a product or a method you can buy. It also isn't only phonics. As literacy researcher Timothy Shanahan has pointed out, the term has no single agreed definition, but the research clearly covers word reading, fluency, vocabulary, comprehension and writing.

Two simple models capture much of what the research has found, and they're worth knowing well.

The Simple View of Reading

In 1986, researchers Philip Gough and William Tunmer proposed that reading comprehension is the product of two things: decoding (reading the words) and language comprehension (understanding the language those words form). If either is zero, comprehension is zero. The model explains why a child who decodes perfectly can still understand little, and why a child with strong language can't show it until decoding is secure.

Scarborough's Reading Rope

Hollis Scarborough's Reading Rope breaks those two parts into strands. The word recognition strands (phonological awareness, decoding and sight recognition of familiar words) become increasingly automatic with practice. The language comprehension strands (background knowledge, vocabulary, language structures, verbal reasoning and literacy knowledge) become increasingly strategic. Skilled reading is the strands woven tightly together.

How words are stored

Research by Linnea Ehri and others shows how readers come to recognize words instantly. When children connect each sound in a word to the letters that spell it, a process called orthographic mapping, the word is stored and later read at a glance. This is why phonemic awareness and phonics matter for all words, including common irregular ones, and why memorizing word shapes doesn't work.

The National Reading Panel's 2000 report identified five essential components: phonemic awareness, phonics, fluency, vocabulary and comprehension. A later federal practice guide for kindergarten through third grade summarizes foundational skills research this way:

A "minimal" rating means fewer rigorous studies, not that something doesn't matter. Language and vocabulary are essential; they are simply harder to study in short experiments.

Phonemic awareness

Keep it short, playful and focused on blending and segmenting sounds. The National Reading Panel found phonemic awareness instruction was more effective when children worked with letters as well as sounds, so connect oral work to print early.

Phonics

Teach letter-sound patterns systematically (in a planned scope and sequence) and explicitly (by showing and modeling). A strong lesson includes review, a new pattern, blending practice, spelling by sound (dictation) and reading connected text that uses the pattern. Cumulative review keeps older patterns fresh.

Fluency

Give students daily practice reading connected text: decodable texts for beginners, then a widening range of books. Repeated and guided oral reading with feedback builds accuracy, rate and expression.

Vocabulary and knowledge

Read aloud rich, complex books, teach useful words explicitly, and organize read-alouds and units around topics so knowledge builds day after day. Knowledge-rich classrooms help comprehension in every subject.

Comprehension

Teach a few comprehension strategies explicitly, through modeling and think-alouds, always in service of understanding a worthwhile text. Discussion, text structure and writing about reading deepen understanding.

Research has prompted many teachers to rethink a few common habits:

• Three-cueing prompts that steer beginners to guess a word from the picture, the first letter or "what would make sense." Guessing can work in predictable books but undermines the letter-by-letter attention that stores words. Prompt to the letters first, then check for meaning.
• Memorizing word lists as shapes. Teach high-frequency words by mapping their sounds and letters, and mark only the irregular part to learn by heart.
• Predictable or leveled texts as the main decoding practice. For beginners, decodable texts give practice with the patterns just taught. Keep rich read-alouds for language and enjoyment.
• Waiting for children to "get it" on their own. Some students learn to read with little instruction, but many need explicit teaching, and some need much more of it.

It isn't phonics only, it isn't anti-literature, and it doesn't require a script that removes your judgment. Students still need beautiful books, conversation, writing and choice. It also isn't finished: researchers continue to study questions such as how best to build comprehension and how to teach older students who struggle. Healthy skepticism of anyone selling certainty is part of the science.

Start with an honest look at a typical day:

• Is there short, daily phonemic awareness work connected to letters?
• Do you follow a clear phonics scope and sequence, with blending, dictation and review?
• Does every student read connected text every day, at an accessible level?
• Do read-alouds and units build knowledge and vocabulary over time?
• Do you screen all students a few times a year and use the results to form small groups?
• Do students who struggle get extra, targeted instruction early?

Change one thing at a time, and watch the results in your students' reading.

Research consistently shows that reading difficulties are easier to address early than late. Many schools now screen every student from kindergarten through third grade, often three times a year, with short measures of skills such as letter-sound knowledge, phonemic awareness, word reading and oral reading fluency. Many states also require screening for characteristics of dyslexia.

Screening is only useful if it leads to action. Use results to form small groups that target specific skills, give students who are well below benchmark extra, more intensive instruction, and check their progress every few weeks so you can adjust. Share results with families in plain language, along with one or two things they can practice at home.