Language Programs Ranked by Comprehension Outcomes

One criticism I often see of meta-analysis is that different studies are measuring different outcomes. For example one reading program study might measure letter ID and phonemic awareness, whereas another might measure word ID and comprehension. Even more problematic, some studies list their impact without listing their measurement criteria. Moreover, the demographics of different studies are often very different, and different age demographics lead to different results. Earlier this year I put out a large, but non-peer reviewed meta-analysis of language programs. After doing so, I have often gotten the question, what is the best program for my specific situation. In order to address this question, and to help correct for the above listed (valid) criticism of meta-analysis, I have decided to put a small series of sub-analyses that break down my original results according to more specific outcomes, and rank programs based on their effect sizes, according to these outcomes. 


This analysis provides more specific outcomes for people to look at. However, it also lowers the total sample size and statistical power of the analysis. This is especially true, as most studies only look at a small number of specific outcomes, with this in mind, readers should note that most language programs will be excluded from most sub-analyses, due to a lack of research. If you would like to learn more about the methodology behind this analysis, you can find the original sourced article here: 


On this page, you can find language programs ranked by effect size for comprehension outcomes. Please note that this page will be updated over time, as I add new research. 

Written by Nathaniel Hansford

Last Edited 2022-05-28




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Reading Mastery:

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Open Court: 

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Reading Recovery


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Words Their Way:

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