Large-scale randomized controlled trial with 4th graders using intelligent tutoring of the structure strategy to improve nonfiction reading comprehension

Classroom-randomised trial, 130 grade-4 classrooms: a reading-strategy tutor used weekly for a school year raised the standardised Gray Silent Reading Test by ES .10 (p = .08, not significant). Kill-condition test survived 2026-10-16 (extra run 2), with Wijekumar et al. 2014.