Registration Resources (Office of the Registrar)
Registration Errors
Students may get a registration error if they are trying to add a course that has certain restrictions. We recommend following the below steps:
- Check the Course Explorer to see if the class has certain restrictions (certain major, graduate section, level, etc.)
- There are some sections restricted for certain groups (you may be trying to add the graduate section instead of the undergraduate)
- Section information often includes additional information on if/when the restriction will be lifted
- There may be reserved seats for certain levels (typically the section text will include this information)
- Some courses are "Crosslisted" and you may need to register for one of the crosslisted sections
- Common for IS 107, as students must register for STAT 107 (same course)
- If no information is available in Course Explorer, contact the department overseeing the course (Information Sciences for IS/INFO courses, otherwise the relevant department for whatever course you are trying to add)
Common errors:
Student class
The following criteria are used when referring to undergraduate students by class. Typically, these are used only for students who began their college careers at U of I. This is most relevant for academic progress, registration, and time tickets.
| Class |
Earned credit hours |
| First-year/freshman |
0 - 29 |
| Sophomore |
30 - 59 |
| Junior |
60 - 89 |
| Senior |
90+ |
