Using the Partial Credit Model to Evaluate the Student Engagement in Mathematics Scale.

The Student Engagement in Mathematics Scale (SEMS) is a self-report measure that was created to assess three dimensions of student engagement (social, emotional, and cognitive) in mathematics based on a single day of class. In the current study, the SEMS was administered to a sample of 360 fifth graders from a large Mid-Atlantic district. The Rasch partial credit model (PCM) was used to analyze the psychometric properties of each sub-dimension of the SEMS.