Arizona Educator Proficiency Assessments (AEPA) 2026 – 400 Free Practice Questions to Pass the Exam

Internal consistency reliability refers to the extent to which all items on an assessment measure the same underlying construct and yield consistent results. This type of reliability is determined by examining the correlations between individual items on the test. A high level of internal consistency indicates that the items within the assessment are well aligned and work together to measure the intended construct effectively.

In the context of assessments, this means that if a student performs well on one item that measures a specific skill, they are likely to perform well on other items that measure the same skill. This consistency among items contributes to the overall reliability of the assessment.

In contrast, test-retest reliability focuses on consistency over time, inter-rater reliability assesses the agreement between different raters or observers, and content validity pertains to how well the assessment represents the intended content area. None of these aspects specifically address the coherence between individual test items as effectively as internal consistency reliability does.