[shagie]

Chemistry 101 is likely a better example. Intro to chemistry is a required to class for almost all STE (not M, but M often takes it too for a physical science degree), along with anything that touches on nutrition, medical...

https://chem.wisc.edu/chemistry-building-project-overview/

> Chemistry, as the central science, is relevant to many other disciplines and is therefore part of the core curriculum of numerous degree programs on campus. By the time they graduate, 55 percent of undergraduates have taken a chemistry class at UW-Madison. As enrollment grew over the years, department and campus leaders noticed that students were often not able to schedule needed courses. This meant it took them longer to earn a degree.

There are about 10,000 under grads for each year at UW Madison. Chem 103 gets about 5000 students per year.

While that roughly matches the Psych 101 with 2000... this shows that "here's a real number."