3 programs, side by side

+ Add a program	McMaster Computer Science I OUAC MC ☆ Add to planRemove	Western Science OUAC ES ☆ Add to planRemove	U of T (St. George) Life Sciences (including Psychology) OUAC TLG ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	90%“A minimum of 90% is required for consideration. Admission is by selection.”Admission by selection — the real bar may sit above this	80–87%“Low to mid 80s”	83–90%“Mid- to high 80s”
Required coursesforced into your top 6 — options are the row below	ENG4UMCV4U	ENG4UMCV4U	ENG4UMCV4U
Choose one ofany of these satisfies it	—	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U	—
Prerequisitesas published	English 4U Calculus & Vectors 4U	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page	ENG4U MCV4U Many programs also require or recommend 1 or more of SBI4U, SCH4U or SPH4U
More than marks?supplementary application	Yes OUAC application deadline: January 15, 2027 To be considered for this program, a mandatory supplementary application Usually closes before January 15	Yes Unless otherwise noted, required courses must be completed with a minimum average of 70%. Western Integrated Science applicants must submit a supplementary application. More information Usually closes before January 15	Marks only
Co-op	Available	Available	Available
Degree	—	—	—
First-year intakewhere published	—	550	—
What you study	Computer Science	Animal ScienceAstronomyBiological SciencesChemistry	Animal ScienceAnthropologyBiological SciencesEnvironmental Studies
What it is	Computer Science I is an introductory computer science program where you learn programming, algorithms, and core computational concepts. It differs from some other programs because it includes a mandatory co-op component, giving you paid work experience in tech roles alongside your studies. This program suits students who want hands-on industry experience early and are curious about whether computer science matches their strengths before committing to upper-year specializations.	This is a broad science degree where you choose from fields like biology, chemistry, physics, computer science, geology, and others. You take foundational science courses in first year, then specialize by selecting which science subjects to focus on. Co-op is available, letting you do paid work terms at science-related employers alongside your studies.	This program covers the study of living organisms and human behaviour, from genetics and microbiology to ecology, nutrition, and psychology. You'll choose a focus area like biological sciences, animal science, environmental studies, or psychology, and take courses that build on that specialization. The co-op option lets you alternate between classroom study and paid work in research labs, hospitals, or environmental organizations. It suits students curious about how life works at every scale, from cells to ecosystems to minds, and who want hands-on experience alongside theory.
The door tomajors you reach through it	computer science	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics	biochemistrybiologyenvironmental sciencehealth scienceslife sciencesmedical sciencesmicrobiologyneuroscience
Entrance awardsat this campus, by average	5 published, 3 with no applicationfrom 75%See them	6 published, 5 with no applicationfrom 85%See them	5 published, 3 with no applicationfrom 90%See them
Source	McMaster University on OUInfo	Western University on OUInfo	University of Toronto — St. George on OUInfo

Ranges are what each university publishes, not guaranteed cutoffs, and limited-enrolment programs often admit above them. Confirm anything you are about to act on with the university; each column links to its source.