Course Enrolment

What You'll Need: 

You will use ACORN to access course enrolment, academic history and grades, program enrolment, view your fees, access tax forms, maintain your student information up to date and correct, and more!

Each course has a unique course code and course description. Familiarize yourself with how to understand them. 

Course Enrolment on ACORN

Your start time is determined by your year of study. Your year of study is defined by the total number of credits you have earned, or expect to earn, by the end of August.

Degree students can view their personal course enrolment start time on ACORN by clicking "Enrol and Manage" from the Academics menu option.

Year of Study View Start Time Course Enrolment Date
First Year 
0 - 3.5 credits                 
June 30                      July 6               
Second Year
4.0 - 8.5 credits  
June 12 June 15
Third Year
9.0 - 13.5 credits
May 29 June 1
Fourth Year
14 or more credits
May 15 May 18
Non-degree / 
Visiting Students
N / A  August 4

Which Courses Should You Take?

Use the U of T Mississauga Academic Calendar to explore programs of study (specialist, major, minor) and degree requirements along with course descriptions.

More information is available on program websites and from department advisors. Consider your strengths, interests and desired program/ career goals. 

Planning Ahead

  • Use theTimetable Planner to create a sample schedule.
  • You can add these to your ACORN enrolment cart, where they will remain saved. Please note that saving courses to your enrolment cart does not add you to the course - you'll have to log back in to ACORN when your start time begins and click "enrol" for each one.
  • You are responsible for checking prerequisites, corequisites and exclusions, which are listed in the Academic Calendar for each course, before enrolling in courses. 
  • If a course has an enrolment control, read the instructions carefully to understand whether you are eligible to add a course right away.
  • If you have questions about your courses, and how to plan your upcoming session(s), please visit the Office of the Registrar.

Transfer students

Depending on the number of transfer credits that you have been awarded, you may be selecting courses as a first year, second year, or third year student. 

If you do not yet have your transfer credit assessment, please refer to the Year Level indicated in your offer of admission. Once you have your transfer credit assessment, please go by the number of transfer credits you have been awarded. Do not wait for your transfer credit assessment to enrol in courses!

Managing Your Courses

Full-Time / Part-Time Status

  • Full-time: Enrolling in 3.0 credits or more from September - April 
  • Part-time: Enrolling in fewer than 3.0 credits 
  • For OSAP purposes, please refer to this chart to determine full-time status

Course Loads - How Many Can I Add?

  • A standard course load for students seeking to complete their degree in four years is 5.0 credits in the Fall - Winter sessions. You may choose to take 4.0 credits in the Fall - Winter sessions, and 1.0 credit in the Summer. 
  • During the second enrolment period, students will have the option to add an additional 1.0 credit for a total of 6.0 credits. If you add waitlisted courses, they will count toward your total number of credits during the enrolment period. 
  • To take more than 6.0 credits (or 3.0 credits per term), submit a petition online for a course overload to request approval. Students enrolled in more than the maximum course load without permission may have the last course(s) that they were enrolled in removed from their course load for that term.

Adding Courses

When your course enrolment start time begins:

  1. Login to ACORN using your JOINid / UTORid 
  2. Select the "Enrol & Manage" feature from the Academics menu
  3. Select Fall 2017 - Winter 2018
  4. Type in the course code or title in the search field to select the course you want
  5. A pop-up window will appear for you to select a lecture, then a tutorial and/or practical (if applicable)
  6. Click "Enrol". ACORN will confirm if your request was succssful, or if there is no space remaining in the section you want.

The last day to add or change your timetable on ACORN are: 

  • September 18 for F or Y courses
  • January 16 for S courses

Waitlist Option

If a lecture section is full, you can add yourself to the waitlist - this is a virtual "line up" to reserve your space in a course should one become available. If you are next on the waiting list, you will be enrolled automatically into the lecture. You are responsible for adding any applicable tutorial, lab, or practical sections by the enrolment deadline.

It's important to recognize that being on the waiting list does not guarantee you a space in the course. If you change your mind about being on a waiting list for a course, please cancel it as soon as possible to avoid course fees, and to give other students the opportunity to move up on the list. By adding a course to the waiting list, you maintain repsponsibility for all academic and ancillary fees related to the course.

Conflicting Courses on Your Timetable

Do not enrol in two or more courses, tutorials, or practicals that are held at the same time, as no special accommodations will be made. 

Dropping Courses

There are academic, and financial deadlines that are important for you to consider. Academic and financial deadlines have important implications on your academic record, and/or your fees. 

Things to consider: 

  • If you are receiving financial aid (OSAP or other), speak with a Financial Aid Advisor before dropping a course. In some cases, dropping a course may result in significant changes to your funding and may impact future eligibility. 
  • Academic Advisors are available to support your academic goals, and can meet with you to discuss any questions or concerns you may have.

Dropping a Course on ACORN

  1. Login to ACORN 
  2. Using the Courses screen, click the gear next to the course title and select "Drop course" from the drop down menu that appears.

Late Withdrawal after the Drop Date (LWD)

If you missed the deadline to drop a course, you may apply for a late withdrawal online up until the last day of classes.

Credit / No Credit Option 

U of T Mississauga degree students may select up to a maximum of 2.0 credits throughout their undergraduate career to be assessed as Credit/No Credit. Courses passed with a final mark of at least 50% will receive a 'credit' (CR) notation on your transcript. Marks below that will be assessed as 'no credit' (NCR), and will be recorded on your transcript. Students who select CR/NCR for a course may use it toward distribution requirements, but it cannot be used to satisfy program requirements. CR/NCR assessments have no effect on your GPA. Courses with a final status of CR will count as degree credits.

The deadline to select or cancel CR/ NCR is the last day of classes for the relevant session.

Academic Opportunities

Research Opportunity Program (ROP)

The Research Opportunity Program (ROP) provides an opportunity for students to earn 1.0 full credit by participating in a faculty member’s research project.

Descriptions of ROP299Y, 399Y and 499Y projects will be available late February to early March of each year. Students wishing to apply for placement in ROP projects must log in to the ROPAPP using their UTORid. 

Taking Courses at Other U of T Campuses

You must have completed 4.0 credits at U of T Mississauga by the end of the Summer Session to be eligible to enrol in courses at other U of T campuses. If you register, but do not have 4.0 UTM credits, you will be removed from the courses. Non-degree visiting students at U of T Mississauga may not take courses at other campuses.

If you want to enrol in courses offered at the St. George (downtown Toronto) campus or at U of T Scarborough, check their respective enrolment instructions because many courses restrict enrolment and have limited space for U of T Mississauga students. You may add St. George and Scarborough campus courses from August 11 to September 18 (F & Y courses) and until January 16 (S courses).

You must follow U of T Mississauga financial and academic dates, with the exception of Late Withdrawal After the Drop Date (LWD) — consult the “Important Dates” section at the beginning of this guide.

It is your responsibility to:

  • Ensure that the courses you enrol in do not duplicate, and are not exclusions for, courses you have successfully completed.
  • Check with your department advisor regarding the acceptability of courses for program requirements.
  • Check with the Office of the Registrar regarding acceptability of courses for degree requirements.
  • Failure to follow these steps could result in loss of credits and delay your graduation.
  • If you need to drop a course taken at another U of T campus, the U of T Mississauga fees refund schedule and deadlines apply. Please check the “Important Dates” section on our website.

Letters of Permission

U of T Mississauga students wishing to enrol at another Canadian university and transfer those credits towards a University of Toronto degree must apply for, and be granted, a Letter of Permission (LOP) from the Office of the Registrar before enrolling at the other university. If you do not receive an LOP before you take these courses, you should apply for a transfer credit assessment at upon completion. However, there is no guarantee what, if any, transfer credit you will receive. You must have 4.0 credits completed at U of T Mississauga to be considered for a letter of permission. 

Enrolment Controls

Some courses have enrolment conditions that control how students enrol in a course and/or which categories of students are permitted to enrol in that course. A course with enrolment controls will be listed in the timetable to provide you with additional information describing how to enrol and which categories of students are allowed in.

If no enrolment control indicator is shown, the course may be selected by all U of T Mississauga students who have appropriate prerequisites. Some courses require further approval to complete your enrolment. These courses may still be added using ACORN, but will appear with an interim status until reviewed. After departments review the requests, they assign a status of approvedrefused, or cancelled. It is the responsibility of the student to check the status of a request. Once a course is approved, the course fee will be added to your account and enrolment is complete. If a course is refused, no charges will be incurred.

Some courses and/or practicals and tutorials appear on the timetable as “Closed.” Students may not enrol in closed tutorials/practicals using ACORN until the courses are opened.

These closed courses/tutorial/practicals may be placed on the timetable by departments:

  • as placeholders to hold a room reservation and time slot in case enrolment in the course grows to a level where extra lectures/tutorials/practicals are needed, OR
  • for delayed enrolment, such as certain practicals/tutorials which are only opened after the first class meeting, OR
  • for students to enrol on Blackboard as per notes on the course timetable.

Students may only enrol in lectures/practicals/tutorials that are available. Please do NOT rely on “Closed” sections becoming available. Sections will be opened only if demand warrants.