At the end of the Spring 2020 term, students may choose to convert their letter grade in any course to one of two new grades that have been created: SD (Satisfactory-Disruption) and UD (Unsatisfactory-Disruption). See https://registrar.wisc.edu/spring-2020-disruptive-grading/ for details and frequently asked questions about the disruptive grading option. The Registrar’s Office will continually update information at that link as decisions are made.