The Department of Statistics courses are in high demand. Highest priority in registration for each statistics course is given to statistics students, and students that are required by their major or program of study to take that particular course. This priority is given by restricting registration for most statistics courses to those students for a period of time that varies by course and section.
If your question is not answered here on the pages below, please contact stat-undergrad@illinois.edu (undergrads) or stat-grad@illinois.edu (grads), providing your name, UIN, and if applicable, the courses you're having trouble registering for.