| Rich Edwards, professor of Learning Services and Perception Assessment Manager at Kirkwood, says that students often registered for the wrong biology class when they came to the college. They took the advanced College Biology class and failed it, or took the Basic Biology course and found it too easy.
So in the summer of 2006 Edwards' department helped a team of Biology faculty to create a placement test using Perception. Prerequisite knowledge in various topics, such as cell division, was organized in a topic structure in Perception. The team contributed questions to the online shared repository using the Word Authoring Template, browser-based authoring, or working directly in the shared repository. Existing questions in Word files were formatted for direct import into Perception. These question writing tools accommodated team members’ technical proficiency and personal schedules, making creation of the initial 200 test questions relatively quick and easy.
"We field tested the first version of the test with Biology students in fall 2006, eliminated nonperforming items, and then field tested again in spring and summer 2007," Edwards says. “We used the Item and Question Statistics reports to identify questions that did not meet difficulty, correlation, and discrimination criteria.” The team created two forms of the test, A and B, each with 40 questions. Students who did not obtain the cut score on Form A could attempt Form B. The two forms had to be equally difficult so that students would be placed properly regardless of which test they took. On a scale of 0 (the hardest questions) to 10 (the easiest), the questions on Form A had to be within 0.1 point on the difficulty scale compared with the questions on Form B.
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