Exact Path Independent Study of Differential Item Analysis in Edmentum's Item Bank

During Spring 2022, eMetric, a third-party research organization, completed a Differential Item Functioning (DIF) study of the Exact Path diagnostic item bank. DIF studies are a common way to evaluate item quality and the fairness of student assessments in our industry. This study provides evidence that items administered in Exact Path diagnostic assessments are fair for all students.

Additionally, in 2025, eMetric completed a Differential Item Functioning (DIF) study of the Exact Path diagnostic assessment in the subject areas of language arts, mathematics, and reading across grades K-12. This study provides evidence that items administered in Exact Path diagnostic assessments are fair and accurate measures of achievement for all students.