Module 12: Construction of Multiple-choice Tests
After the test is given
After the test is administered, the instructor should analyze the results
item by item. Any test items that are missed by most of the students should
be thoroughly analyzed. Questionable items should be considered for revision
before the test is administered again. Ideally, after years of teaching, an
instructor should have a test bank consisting of numerous well-written test
items from which to choose for a given content area.
An item analysis can reveal item difficulty, which is the percentage of
students answering the item correctly.
| Difficulty of an item |
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Number answering correctly |
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| Number taking the test |
Optimally, difficult items are those that about 75% of the class answered
correctly. Exams should contain only a few items that more than 90% or less
than 60% passed.
This quick overview of test construction provides basic information for your
consideration. Skillful test construction comes with experience. Item
analysis is a form of feedback for the test developer.
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