The Headline Finding

 After a systematic review of 10 of the most widely cited dyslexia intervention programs — applying PRISMA 2020 and GRADE standards — one finding demands the field's attention:

Not a single program achieves "high certainty" of evidence across the full set of foundational reading outcomes.

This is not a failure of Structured Literacy as a category. The science of reading is clear: explicit, systematic, cumulative, diagnostic, multisensory instruction works.

It is a failure of program-level evidence transparency.

Two of the most commercially adopted programs in U.S. schools — the Wilson Reading System and the broader Orton-Gillingham brand — carry the weakest aggregate causal evidence. The What Works Clearinghouse identified zero studies of Wilson Reading System meeting its evidence standards.

Meanwhile, programs with stronger evidence (LiPS, Equipped for Reading Success) enjoy comparatively lower public recognition.

This is the evidence-marketing gap, and 150–200 million children worldwide are paying its cost in developmental time they cannot get back.

The full dissertation includes a parent-and-educator decision framework. Families deserve more than brand recognition as a guide. Check out the full study on NeuroNavigation.org/Research. Share if you agree.

#Dyslexia #ScienceOfReading #StructuredLiteracy #EducationPolicy #PublicHealth #Advocacy