Math101 · Independent Ontario learning library
The dates below are common milestones published for Ontario high-school applicants. They are not a complete application calendar. A university or program can set earlier supplementary, portfolio, interview, scholarship, residence, or document deadlines.
Common OUAC schedule
| Date | Published milestone | What the student should do |
|---|---|---|
| November 5, 2026 | Schools’ initial student data due to OUAC | Check personal, contact, and course information when access is available. |
| November 19, 2026 | Available 4U/M midterm or final grades due | Verify that the correct courses and grades appear through the provided channels. |
| January 15, 2027 | Ontario high-school applicant deadline | Submit earlier when possible and confirm payment/status. |
| February 11, 2027 | Next available grades due | Keep portals, messages, and supplementary tasks current. |
| April 22, 2027 | Spring midterm/available final grades due | Review reported prerequisite marks. |
| May 28, 2027 | Latest common response date | A response may be an offer, refusal, or deferral pending information. |
| June 1, 2027 | Earliest common required response/financial commitment | Read conditions before accepting; track residence and deposits separately. |
| July 8, 2027 | Final 4U/M grades due | Confirm that final conditions and OSSD requirements are met. |
School-data dates describe when information is due in the system; they are not guaranteed decision dates for every university.
Build the dates that are unique to you
For every program, record official links and dates for:
- supplementary application, interview, audition, test, or portfolio
- transcript or external-document submission
- entrance scholarship and separate award applications
- accessibility registration and documentation
- residence application and deposit
- offer acceptance and tuition deposit
- OSAP and institutional financial-aid documents
- final conditions and summer-course reporting
Use Math101’s interactive Important Dates page as a control panel, then verify live pages before acting.
Can I apply after January 15, 2027?
Some programs may remain open, but availability and consideration are not guaranteed. The published deadline is the key date for current Ontario high-school applicants. Check OUAC and the institution immediately.
Will every offer arrive by May 28?
For on-time Ontario high-school applicants, May 28 is the latest common date for a response under the published schedule. Read OUAC’s wording and check individual portals for the student’s exact situation.
Is June 1 the residence deadline too?
Not necessarily. Residence, scholarship, and deposit dates are institution-specific and can differ. Track them separately from the common offer-response date.
