The single highest-leverage thing a family can do for school is also the gentlest: a few minutes with a book, most nights. Drag the slider and watch what those minutes turn into over a year.
A minute here, a chapter there — it never feels like much. Move the slider and watch the year stack up.
Fifteen minutes a night crosses a million words a year — the 80th-percentile zone. Researchers found out-of-school book reading was the best predictor of reading growth they measured — ahead of every other way kids spent their time.
In the landmark study, that pace out-read about 71 of 100 classmates:
Each dot is one of 100 classmates from the study — filled dots are the ones this pace out-reads. For pre-readers, being read TO counts just the same. Twenty minutes tonight is the whole assignment.
Source: Anderson, Wilson & Fielding (1988), Reading Research Quarterly — the landmark study of how fifth graders' out-of-school book reading tracked with achievement. Book equivalence assumes ~35,000 words per chapter book.