P723: Evaluation of a diagnostic assessment for incoming organic chemistry students
Prerequisites play an essential role in many curricula including the organic chemistry sequence. General chemistry, the primary prerequisite for most courses in organic chemistry, is deemed to help students build a solid foundation of the chemistry concepts needed for their further chemistry classes. However, as performance in general chemistry varies and since many students fulfill their general chemistry prerequisite within various time frames and often at different institutions before enrolling in organic chemistry, the question of students’ residual general chemistry knowledge remains open. Based on previous research, an assessment instrument has been developed to address students’ preparedness for organic chemistry class and to assess their residual general chemistry knowledge when they start organic chemistry. This presentation discusses the initial phases of evaluation for the developed instrument. A brief outline of the test development will be presented in addition to more in-depth discussion of item and test functioning through the prism of Classical Test Theory.