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Failed a Grade 12 course or need a higher mark? What to do next

If you fail a Grade 12 course, you can still have options for Fall 2027. Find out why you need the course. Is it for the diploma, a required subject, or a higher mark? Ask your school about credit recovery or a repeat. Check the university's finish date before choosing summer school.

Reviewed October 18, 2026 · Checked against the primary sources below · How we review guides

Key facts

Credit or mark?
Recovering a failed credit and upgrading a passed course are different tasks.
Course level
A 4U course prepares you for university; a 4M course prepares you for university or college.
Summer risk
A July or August result may arrive after the university's June 30 completion condition.
ILC price scope
Most eligible independent Ontario residents pay $40 per course. Enrolled high school students must use guidance.

Choose a course route before paying or registering

Ask your school to confirm the credit, provider and date your final mark can be sent.

Sources: official school board, TVO ILC and Ontario pages. Current prices and 2026-27 delivery rules are not guaranteed Fall 2027 terms.
RouteWhen it can helpCost and timing evidenceWhat still needs approval
School-board credit recoveryYou completed a course but didn't meet all expectations for a pass.Principal and teachers assess the unmet work and available recovery route.Not a blanket method to improve a mark in an already passed course.TDSB — Credit RecoveryOntario — Secondary school courses and related procedures
TDSB Night SchoolEarn a new credit or retake an eligible course while meeting prerequisites.2026-27 page: 15 weeks, two evenings weekly. Domestic tuition quote not confirmed in the program page.Exact 4U/M offering, exam location and final mark date. Current online Night School requires in-person exams except Open courses.TDSB Continuing Education — Night School
TVO ILC independent studyAn eligible independent learner needs an Ontario credit with flexible study timing.Most qualifying Ontario residents: $40 per course; 110 study hours; up to ten months including the final test.Current Ontario high school enrolment changes the registration route. No guaranteed rapid completion or transcript turnaround.TVO ILC — Frequently Asked Questions
TDSB e-SummerAn available online course fits your eligibility and the university's written conditions.Last posted terms: eligible Ontario students aged 14 to 20 study free; international visa students $1,500 per course.2027 information due April 2027. These are the last posted prices; current e-Summer requires in-person final exams except Grade 11/12 Open courses. Confirm the 2027 rules.TDSB eLearning — e-Summer Program
TDSB summer credit programA new credit or repeat is offered and you meet its prerequisites.Summer School 2027 page: key dates in March; registration in April. Class dates and offerings are not posted.Course availability, fees where applicable and university permission for completion after June 30.TDSB Continuing Education — Summer School Program

Reviewed against each row's official source. Recheck the source before you act, because dates and fees change.

Repeat policies and the deadline problem

Acceptance of a delivery format doesn't remove a course-completion deadline.

Waterloo explicitly labels September 2027. Other rows are current standing policy unless stated; your actual offer conditions still matter.
UniversityRepeated or upgraded markDelivery or completion ruleStatus
WaterlooHighest repeated mark; no repeat penalty for any program.Accredited day, summer, night, online and private-school formats accepted without a format penalty.Confirmed September 2027 policy. Course and document deadlines still apply.Waterloo — Repeated courses and non-day school courses
McMasterHighest mark for up to two repeated courses; more than two repeated courses, or repeating an individual course three or more times, may need an explanation.Courses completed after June 30 immediately before Fall entry aren't included for admission. Engineering also requires its diploma and required courses by June 30.Current standing policy. A summer-format course taken earlier is different from the summer just before entry.McMaster — Ontario High School StudentsMcMaster Engineering — Frequently Asked Questions
Queen'sMost recent grade across undergraduate programs, rather than a universal highest-grade rule.Ontario OSSD and offer average by June 30; course-specific minimums and final records by August 1 on the same page.The page doesn't say which year it applies to, and older form names and 2022 text appear elsewhere. Ask about the exact Fall 2027 offer and course.Queen’s — OUInfo university admission policyQueen’s — Conditional Offers of Admission
U of TMay consider repeats, subject marks and the wider academic record.Courses and graduation requirements completed by the end of June in the application year.Current standing policy; no universal highest-mark promise.University of Toronto — Canadian High School Requirements
WesternOUInfo says highest of two for its '2 repeats' category; '3 or more repeats' uses the average.Courses outside the home school must be approved and Ministry-accredited, with marks reported through OUAC.Current policy. Confirm for Fall 2027 how Western counts your attempts before planning another repeat.Western — OUInfo university admission policy
TMUBest six may include repeated or upgraded marks.Complete by June 30 unless the offer says otherwise. Summer-school extension requests need permission.Current standing policy. Sending a request is not approval.Toronto Metropolitan University — Ontario secondary school students

Reviewed against each row's official source. Recheck the source before you act, because dates and fees change.

Work out what the failed course changes

Open your school credit record and your program's requirements together. A failed compulsory credit can stop you earning the Ontario Secondary School Diploma, or OSSD. A failed prerequisite can block a particular program even if you can still graduate. A failed elective may affect the eligible course count or average instead. Those situations need different plans.

You can pass a course and still fall below a university's subject minimum. Ontario's policy normally awards a credit at a final mark of at least 50%, after the required work. That may not meet the university's rule. Check the subject mark and the overall average on their own. Recovering the credit doesn't settle both questions.

Ontario's diploma rules depend on when you started Grade 9. If you started in September 2023 or earlier, the usual requirement is 30 credits: 18 compulsory and 12 optional. For Grade 9 entry in 2024-25 or later, it is 17 compulsory and 13 optional. A failed compulsory credit can't simply be left out because you have enough electives. Ask guidance to check your literacy requirement and 40 community-involvement hours too, plus the online-learning requirement and its opt-out process.

Use the academic requirements guide for the broader six-course and prerequisite rules. Write the exact course code beside each problem and take it to guidance. A plan to replace a mark is much easier to assess when the school and admissions office can see which requirement is at risk.

Sources: Ontario — Secondary school courses and related procedures · Ontario — Diploma and certificate requirements · Toronto Metropolitan University — Ontario secondary school students

Ask about credit recovery before repeating everything

Credit recovery can let an eligible learner complete expectations they missed in a failed course. Ontario's policy calls for consultation with school staff after a course is completed without a pass. TDSB lists several possible routes, including independent study, remediation and summer study. The principal and teachers decide which route fits the work and your situation.

Don't treat recovery as a way to turn any passing mark into a higher one. If you passed but need a better admission result, ask about upgrading or a full repeat instead. Also ask what final mark and course record the school will produce. Your university must assess that record under its own admission policy, rather than a tutor's description of recovery.

Ask who holds your Ontario Student Record and who will confirm graduation. The provincial diploma policy explains that the school holding the record usually issues the diploma when you finish elsewhere. It also gives a choice when ILC supplies the final credit. Sort out that responsibility early so a completed course doesn't leave your graduation record unfinished.

Sources: TDSB — Credit Recovery · Ontario — Secondary school courses and related procedures · Ontario — Diploma and certificate requirements

Choose an upgrading provider you can actually use

ILC's $40 price applies to most qualifying Ontario residents who register independently. Its FAQ says you can't register directly on the website while you're enrolled at an Ontario public, Catholic or private high school. Contact guidance in that case. Don't pay another provider because you assumed the independent registration rule applied to you.

ILC gives up to ten months to finish a course, including the final test. It describes 110 hours of study and assignments submitted in sequence. Feedback can take up to five business days. Those steps make a last-minute rescue uncertain. The FAQ doesn't promise a minimum completion time or a guaranteed date for a university to receive the transcript.

A board course may fit your timetable better. Check its level and the courses you need first. A Grade 12 college-preparation credit can't simply replace a required university-preparation subject. Ask guidance if a private or online school can issue the Ontario credit. Then ask admissions if it accepts that route. Get both answers before paying.

Sources: TVO ILC — Frequently Asked Questions · TDSB Continuing Education — Night School · Ontario — Secondary school courses and related procedures

Plan night school around the actual exam and reporting dates

TDSB's current Night School page covers 2026-27. It describes 15-week semesters with classes on two evenings a week, from 6 to 9 p.m. Semester 2 registration runs from December 1, 2026 at 10 a.m. to January 29, 2027 at noon. The exact offerings still need checking before you build your school timetable around one.

The current page requires in-person final exams for online Night School, except Open-level courses. Its general Continuing Education FAQ instead says remote exams are online and still carries 2025 summer dates. That's a conflict between official pages. Use the current program instructions and get the exam arrangement confirmed before registering for a course you can only attend remotely.

The program page doesn't give an ordinary domestic Night School tuition quote. Ask the board rather than borrowing the e-Summer price. Also ask when the final grade will be ready and how your home school will report it. An exam before June 30 is useful only if the completed course satisfies the university's actual condition.

Sources: TDSB Continuing Education — Night School · TDSB Continuing Education — FAQ

Don't treat summer school as an automatic extension

McMaster won't use courses finished after June 30 just before Fall entry in its admission average. Its Engineering FAQ also requires the diploma and all required courses by June 30. Keep that timing rule separate from the teaching format. An accredited summer course taken earlier can count. The summer just after Grade 12 may be too late for that September.

Queen's needs more careful reading. Its Ontario conditions page sets June 30 for the offer's final average and the OSSD. It separately gives August 1 for course-specific minimums and final records. The page isn't labelled Fall 2027, and older text appears elsewhere. Don't infer an extension from the later date. Ask admissions about your exact failed or upgraded subject.

TMU provides a summer-school extension request route, but a request isn't permission. Send the proposed provider and course code, its completion date and expected transcript date. Wait for a written decision before relying on it. The accepting-offers guide explains how conditions affect an accepted offer; accepting doesn't erase them.

Sources: McMaster — Ontario High School Students · McMaster Engineering — Frequently Asked Questions · Queen’s — Conditional Offers of Admission · Toronto Metropolitan University — Ontario secondary school students

Check the repeat rule before risking a lower mark

For September 2027, Waterloo explicitly accepts the highest grade in a repeated course without a repeat penalty across all undergraduate programs. It also removes a delivery-format penalty for accredited courses outside regular day school. The rule is published for this cycle and covers every undergraduate program. It still doesn't remove the required subjects or final deadlines.

Queen's current OUInfo entry uses the most recent grade. A later repeat can therefore work differently from a highest-mark policy. McMaster distinguishes up to two repeated courses from larger repeat histories, and may ask for an explanation. U of T reserves the right to consider repeated courses and the full academic record. Keep the policies separate when you compare offers.

Western's official service entry uses the words '2 repeats' and '3 or more repeats'. Ask Western how your record fits those categories instead of assuming that repeats and total attempts mean the same thing. A school transcript showing every attempt is separate from the university's method for calculating an admission average.

Sources: Waterloo — Repeated courses and non-day school courses · Queen’s — OUInfo university admission policy · McMaster — Ontario High School Students · University of Toronto — Canadian High School Requirements · Western — OUInfo university admission policy · Ontario — Student Transcript Manual 2013

Separate published 2027 plans from older summer examples

TDSB's Summer School 2027 page says key dates will be available in March 2027 and registration in April. Class dates, locations and course offerings remain unposted. The e-Summer page says its 2027 information will be available in April. That doesn't confirm a July start, an August finish or availability of your exact maths or science prerequisite.

The e-Summer FAQ's August 5 and August 31 mark-transmission dates describe 2026 sessions. They show why finishing a course and the university getting your mark aren't the same step. They aren't a 2027 schedule. Current e-Summer instructions also require in-person final exams, except Grade 11/12 Open courses. Confirm the 2027 arrangements. Online study has fixed deadlines and daily work expectations, rather than being self-paced around a full-time summer job.

If a July course can't meet your offer, discuss the next viable intake or a later application with admissions. Don't assume you can defer an offer while studying anything you choose. The gap-year and deferral guide keeps each school's restrictions visible. A workable later plan is better than paying for a course on an unapproved deadline assumption.

Sources: TDSB Continuing Education — Summer School Program · TDSB eLearning — e-Summer Program · TDSB eLearning — e-Summer FAQ

Send one clear recovery plan to guidance and admissions

Explain what happened in plain terms and ask for the decision you need. Name the failed or low-mark course, the program you're applying to and whether you've accepted an offer. Include the provider you're considering and the expected final grade date. Ask which records must be sent, by whom, and whether the proposed timing satisfies the offer.

Keep the answer from each university with that offer. Approval from one institution isn't permission from another. If the school says the course is accepted but doesn't address the date, ask the timing question again. If guidance confirms the credit but not the university's assessment, contact admissions. Each office owns a different part of the plan.

Then update your calendar using the grade reporting guide. Include the course finish and the record delivery as different tasks. Check your university account when the mark is sent and follow up on missing records. You don't need to solve every possible future problem today; you need a course route that meets the written conditions you have.

Sources: TVO ILC — Frequently Asked Questions · Toronto Metropolitan University — Ontario secondary school students · Queen’s — Conditional Offers of Admission

Official sources

Confirm current dates, rules, fees, and program details in these primary sources.

Written by Stellar Advisers Editorial Team · Reviewed by Official-source review desk · Last reviewed October 18, 2026

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