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. 2022 Winter;21(4):ar72. doi: 10.1187/cbe.21-09-0248

FIGURE 1.

FIGURE 1.

Would a math prereq help students? Looking only at students who took Intro Bio before the Int Algebra prereq was instituted in 2013, students who completed or tested out of Int Algebra or a higher level of mathematics before taking Intro Bio earned higher course grades (4 = “A”, 0 = “F” or “W”) in Intro Bio than students who did not (B) and had a higher probability of passing Intro Bio (C). There was a disproportionate benefit of completing or testing out of Int Algebra before taking Intro Bio for Pell Grant recipients (D). Note: In D, there is no difference in the probability of passing Intro Bio between Pell recipients and non–Pell Grant recipients who both passed Int Algebra; thus the two data points for Pell Grant recipients and non–Pell Grant recipients who passed Int Algebra overlap. (B–D) Modeled results of the best-fitting model, not controlling for prior college GPA. Bars are standard error around the estimated mean. See Table 3 for quantitative results.