The 2019 coronavirus disease pandemic disrupted higher education during spring 2020 by forcing all face-to-face classes to unexpectedly transition to online learning. To better understand how switching to remote learning affected students and the factors that impacted their ability to successfully complete classes, we asked 168 undergraduate students in three different psychology classes (six sections total) in the last week of the semester about their experiences from before and after the switch. Students reported some decreased access to technology, changes in work responsibilities, some amount of physical illness, and the need to care for others who were physically ill. Notably, students consistently reported increased stress and decreased ability to focus. Students varied in how much they prioritized classes after the switch, which predicted their performance in the class, measured by exam grades, overall grades, and completion of attendance before and after the switch. Importantly, survey respondents significantly differed from 173 nonrespondents in their class performance, which suggests that results from voluntary surveys may capture a limited perspective and possibly underestimate the detrimental effects of the shift to online instruction. Implications for planning for future online classes in a global pandemic are discussed.