Is American University harder to get into than the University of Wisconsin for undergraduate admissions?

Yes. For a typical undergraduate applicant, American University is usually considered harder to get into than the University of Wisconsin, especially because American draws a very large pool of applicants for a smaller undergraduate population and tends to be more selective overall.

One concrete difference is scale and mission. American is a private university in Washington, DC with a comparatively smaller undergraduate enrollment, so it can shape each class more narrowly around institutional priorities like public affairs, international studies, and engaged campus involvement. Wisconsin is a much larger public research university, and while it is still selective, its size gives it more room in the incoming class.

Another differentiator is applicant pool composition. American attracts many students specifically interested in politics, policy, international relations, communications, and internships in DC, so it gets a concentrated set of applicants looking for that exact environment. Wisconsin gets a broad national and in-state applicant pool across many academic interests, and public flagships often have a somewhat different admissions dynamic because they serve a larger state mission.

Residency also matters at Wisconsin in a way it does not at American. The University of Wisconsin typically has a different admissions landscape for in-state versus out-of-state students, and that can change how hard it feels to get in depending on where you live. American does not have that public-university residency structure, so its selectivity is more uniform across applicants.