19/08/2026
84% of English words follow a pattern. Here is the research.
A computer analysis of 17,000 English words tested how far spelling can be predicted from sound. About 84% of the words followed regular patterns. Only around 4% were truly irregular, and most of those contained just 1 unpredictable letter, with the rest of the word behaving normally.
WHAT THIS MEANS. English has a reputation for being chaotic. It is not. It is a language with more sounds than letters, so letters combine and share duties, but those combinations follow rules that can be taught directly. This is the core reason systematic, explicit teaching of letter and sound patterns outperforms word memorisation in controlled studies.
PATTERN VERSUS MEMORY. A child who has learned the pattern can read a word he has never seen before. A child relying on memory can only read words he has already met, and only while the memory is fresh. This is why performance on the same word varies from day to day. Inconsistency is a signal that a child is remembering rather than decoding.
WHAT TO DO WHEN HE GETS STUCK. Do not supply the word. Point him back to a pattern he already knows and let him rebuild it himself. Supplying the word ends the moment. Pointing to the pattern strengthens it.
Sources: Hanna, Hanna, Hodges and Rudorf 1966, analysis of 17,000 words; National Reading Panel 2000; Ehri et al, Reading Research Quarterly.
Day 3 of 30. Reading Made Easy. For parents and teachers.