Business Procedure Manual campus collage Vertical red bar NIU
Northern Illinois University
Table of Contents A - Z Listing Finance and Facilities Home NIU Home
Testing Services
Procedure No. 24-1
Issued 7/2001
  1. Test Scoring, Analyzing and Reporting Services

    1. Services Available
      1. Scoring of Tests marked on optically scannable answer sheets. Part as well as total scores may be obtained. Versatile scoring programs allow for scoring almost any test.

      2. Test Analysis including the following information:
        1. Item analysis

        2. - Number and percent choosing each answer.

          - Item average score -- an index of item difficulty.
          - Item weight.
          - Discrimination index (RXI) -- correlation between the item and the test score.
          - Number wrong.
          - Test reliability (alpha).
          - Standard error of measurement.
          - Correct "keyed" answers.

        3. Score Statistics for current and cumulative tests

        4. - Frequency distribution -- number of persons obtaining each score.

          - Standard score distribution -- converted scores useful in weighting tests for grading.
          - Percentile score distribution--percent of class scoring equal to or less than each particular score.
          - Percent of maximum score.
          - Average score (Mean).
          - Standard deviation (SD).
          - Letter grade assignments.

        5. Roster listing each person by name and by ID number showing his/her score, and percentile.

        6. Individual score reports
          - Course identifying information.
          - Student name and identification number.
          - Test score information including percentile (Optional).
          - Keyed answers (Optional).
          - Student responses (Optional).
          - Cumulative score information from previous tests.

      3. Cumulative Record Service which records all test scores through the semester and totals them after each test is given. Options include:
        1. Including scores from essay tests, labs, etc. in the cumfile.
        2. Score transformations and conversion to standard scores.
        3. Drop lowest 1 or 2 scores.
        4. Differential weighting of tests.
        5. Assigning letter grades.
        6. Printouts of score statistics and rosters by class (Section).

      4. Non-Test Scanning -- Information from surveys, record-keeping forms, and research studies can be marked on scannable forms. Such data can then be scanned and transmitted to diskette or emailed, thus eliminating manual data entry. Custom scannable forms can be developed using a variety of methods depending on your application. Contact Testing Services for more information.

      5. Evaluation Instruments -- generalized programs are available for processing instruments for rating teachers, courses, students, etc. These provide the following information:
        1. Number and percent choosing each rating.
        2. Average rating for each question.
        3. Median rating for each question.

      6. Item Matching -- This program compares each answer sheet with each other answer sheet of the same form, and lists pairs that exceed predetermined criteria. Such comparisons are helpful in calling attention to possible cheating.

    2. Procedure for Scoring Services
      1. Secure optical scanning answer sheets from your departmental office. (Available from Testing Services if not through your departmental office.)
      2. Forms used for any application other than teacher evaluation or classroom testing must be purchased.

      3. Soft-lead pencils (No. 2) must be used for marking the form. Do Not Use Ink.
      4. Prepare a key by marking all correct answers on an answer sheet.
      5. Submit answer sheets and key to the Office of Testing Services, Adams Hall, Room 128.
      6. Classroom tests will be scored the day they are submitted. Printouts for tests submitted in the morning are ready the same afternoon.

    3. Multimark Items
    4. Questions which call for more than one response (mark) should not be used. Such items can usually be written with each option as a separate true-false question.

    5. Further information is available in:

Testing Services

Adams Hall, Room 128

Phone: 753-1203