What information is included in the Assessment Series data displays? 

This article is intended only for customers and partners using the Assessment Series.

CommonLit’s data displays include details about individual students’ performance on each assessment and their growth from assessment to assessment. 

For each assessment, teachers can see details about how each of their students performed, including their scaled scores and percentile rankings.

What are scaled scores in the CommonLit Assessment Series?

What is an Assessment Series percentile ranking and how should it be interpreted? 

CommonLit uses performance thresholds to group students as Below or Approaching grade level, On grade level, and Above grade level on teachers’ data reports. These groupings can be used to identify students who may need additional support. For more information on these performance groups, see the section “How does CommonLit define Below & Approaching Grade Level, On Grade Level, and Above Grade Level?” 

Teachers can also see data about how their students performed on each of the assessed standards. Because CommonLit’s assessments are intentionally short, each standard is only assessed a few times. This prevents the use of IRT (Item Response Theory) methods for scoring standards performance on a consistent scale. Instead, student performance is reported as the percentage of questions associated with each standard answered correctly. The difficulty levels of questions will fluctuate across assessments, leading to changes in how well students perform on the standard not due to their growth in overall reading ability. Therefore, students’ performance on each standard should always be considered alongside other standards data. 

CommonLit also provides data displays to help teachers understand how their students’ performance changes from the Pre-Assessment to the Mid- and Post-Assessment as well as how their classes’ performance changed overall.