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You can register for courses only when the registration period is open based on the semester/session start date. Registration closes when either the course fills or the free drop/add period ends for that respective semester/session.

Please refer to the academic calendar for specific dates.

Full/Canceled Classes

It’s best to register as soon as possible after a registration period opens to ensure that you get a seat. We recommend that you contact your advisor before adding yourself to a waitlist because 1) your advisor may be able to obtain a seat for you in some circumstances, or 2) to ensure that you are on the correct waitlist, or 3) your advisor may be able to recommend alternate courses if a course is full.

Free Add/Drop Periods

During free drop/add periods, you can add, drop, or change courses without financial penalty. You will receive a 100% tuition refund for courses dropped during this specific time. Once the last day of free drop/add has passed, there are no tuition refunds, and you cannot add or drop a course. Please refer to the academic calendar for specific dates.

Withdrawal Period

After free drop/add has ended, you can withdraw from a course by logging into UDSIS and following the prompts for registration. Withdrawing from a course results in a $25.00 fee and a “W” will appear on your transcript. Withdrawing does not negatively affect your GPA.

After the withdrawal period ends, you must remain in the course. Please refer to the academic calendar for specific dates.

International students must maintain nine graded credit hours per Fall/Spring semester, so be careful when dropping/withdrawing from a course.

Course Registration FAQ

How many classes should I sign up for?

Part-time students register for either one or two courses. Full-time students are required to register for a minimum of 9 credits (three courses). If you’re not sure how many courses you can handle, please consult with your advisor.

Foreign national students on either an F-1 or J-1 visa must ensure that they are registered for three courses (9 credits). Two courses must be either in-person or hybrid.

Why aren’t all the classes offered in summer and winter sessions?

Because of study abroad and other teaching commitments on the part of the faculty, we cannot produce a full menu of classes for summer and winter sessions. The course offerings tend to change from year to year based on professor availability. It’s sometimes helpful to use an upcoming summer or winter session schedule to choose classes offered in that session, then look for other choices in the adjacent fall and spring.

I am trying to register for courses and UDSIS will not let me. What’s wrong?

Missing prerequisite

If you have a waiver for a course that serves as a prerequisite for the course you’re attempting to register for, access will be denied.


  • You’ve been given a course waiver for ACCT 600. When you attempt to register for BUAD 680 or FINC 650, UDSIS will block you out.
  • You were waived out of FINC 650, so UDSIS will block your attempts to register for any course in the FINC 650 series, such as 651, 652, etc.

Simply send a quick note to your advisor with your full legal name, student ID number, and the course you need. Let us know you have a course waiver so we can quickly get you in the course.

Hold on your account

You can check the status of your account via UDSIS or via Student Financial Services. Report any discrepancies to sfs-advisor@udel.edu. If you have a hold because of an unpaid balance, immunization hold or you have not completed any required training such as sexual misconduct training, you cannot register until you have taken care of the hold.