I once knew a girl who read medical memoirs from age 8, and shortly thereafter identified her future employer as the Epidemic Intelligence Service at the Centers for Disease Control. She eventually headed off to college as a pre-med student, where she encountered Chemistry, which she hated. She suffered through, earning a hard-won B. Then, facing two semesters of Organic Chemistry, she concluded that the ensuing decade of medical training would be similar. She dropped off the track.
That girl was me, and I was unaware that I’d simply been weeded out by, well, weed-out classes. As the name suggests, these courses end a study trajectory for many students. Weed-outs are typically foundational courses with high enrollments in which many students earn Ds and Fs, or withdraw — known in the field as a verb, “DFWing.”
The classes are usually among the first coursework that a student may encounter, such as college algebra, calculus or writing, though some appear a few semesters down the line, such as nursing students who face anatomy and physiology, or pre-med students enrolling in organic chemistry. Introductory courses also commonly serve as weed-outs, such as initial courses in psychology, economics, accounting, physics, chemistry, biology and world history, says Drew Koch, president of the Gardner Institute, an organization that improves collegiate teaching and learning, and also tracks weed-outs.
The effects of a low grade
Why do we care? Well, weed-outs derail promising students from their fields of interest, and a disproportionate number of those derailed students are low income, first-generation or students of color, many of whom graduated from under-resourced high schools. A low grade can have rippling negative effects on these populations. For example, students receiving federal aid such as Pell Grants can find their funding threatened due to unsatisfactory academic progress, even if they withdraw rather than flunk. And it can derail promising careers.