Minutes on a reading tutor matter less than what students actually finish.

Schools often measure how much kids use learning apps by counting their minutes logged in. But just staying on an app does not tell us what a child actually learned. Researchers tested Project Read Tutor, a digital phonics and reading tutor. Instead of just logging time, they tracked completed learning goals. Children must show mastery of reading tasks to unlock the next step, working on single words or full stories. The team found that counting completed goals predicted reading growth far better than screen time. In fact, when looking at both together, minutes spent on the app did not matter much. Every 10 completed goals linked to noticeable score jumps, though gains only started after kids finished around 10 goals. Practicing words boosted sound-based skills, while story reading helped both sounds and fluency. These benefits were strongest for children with disabilities and those who began with weaker skills.

Why it matters

Schools spend millions on digital reading tutors, but most evaluations count only minutes logged. This study shows that what matters is whether students actually complete instructional objectives — not how long they sit at a screen. For struggling readers and students with disabilities, the effect is even stronger, suggesting that content-based progress tracking could better guide intervention.

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