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Features of our data set. We analyzed assessment items from a variety of biology courses (A); lower- and upper-division courses (B); and assessment sources such as exam, quiz, review, and homework problems (C). The data set also included 51 AP Biology and 55 MCAT questions, which accounted for about 11% of the total sample (n = 940). The AP Biology and MCAT questions were combined as one category and included in the pie charts for completeness of the data set.
