In this commentary on "Does Sorting Students Improve Scores? An Analysis of Class Composition" (Collins and Gan 2013), the author discusses the findings in Collins and Gan's study on grouping to provide appropriate-level instruction to promote students' academic growth. This commentary critiques the credibility and validity of the study's findings. One of the author's main concerns is regarding language, which is vitally important in research. Suggestions are made for correcting language in the study, improving the overall quality of the study, and reporting the correlation between variables. [For "Does Sorting Students Improve Scores? An Analysis of Class Composition." NBER Working Paper No. 18848 (2013), see ED541251.]