Test overview reports

The test overview report provides summary information about your exam.

  1. Log in to GradeHub
  2. Select the class and test you want to view reports for
  3. Select the Test overview link under reports


Select the Summary, Distribution Chart, Distribution Table, Score Percentile, or Item Matrix tabs to view reports.

Click the download icon  to save a PDF of the report(s). Select the top download icon to save all reports and select the lower download icon to save an individual report.


Summary report

The summary includes relevant statistical data such as: 

  • The class average, and high and low scores
  • A Kuder-Richardson 20 (KR-20) internal measure of test reliability, which determines the the consistency of a test. The higher the reliability, the more likely you would produce similar results administering the same test to the same class
  • The standard error, which lets you understand how a student’s real knowledge differs from their actual test score




Distribution chart

  • A bar graph displaying the distribution of students’ letter grades for the test to help you (1) make direct comparisons of student grades and (2) quickly understand how your class performed






Distribution table

  • A table displaying the distribution of students grades
  • The uncluttered table has been organized by grade interval to understand score frequencies clearly
  • Our score distribution includes grades, percent ranges, raw scores, and the number and percent of students receiving that grade





Score percentile table

  • A table to let you see how students compare with other students
  • Organized from the lowest to highest raw score, you can easily view the number of test scores in percentiles from 1 to 100





Item Matrix

  • A chart displaying the item discrimination using point-biserial correlation (vertical axis) and item difficulty analysis (horizontal axis) of the test questions
  • The item discrimination uses point-biserial correlation to check how well the test questions serve to discriminate between students with higher and lower levels of knowledge. In other words, it checks whether test questions are valid
  • The item difficulty analysis expresses the percentage of students who answered each test question correctly. Item difficulty ranges from 0.0 (no students answered correctly; the question may have been too difficult) to 1.0 (all students answered correctly; the question may have been too easy)