4 programs, side by side

Full	Western Science OUAC ES ☆ Add to planRemove	Algoma Environmental Science (BSc 4 Year) OUAC JES ☆ Add to planRemove	Laurier (Waterloo) Honours Science (BSc) OUAC UZL ☆ Add to planRemove	U of T (Mississauga) Chemical and Physical Sciences OUAC TMW ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	80–87%“Low to mid 80s”	65%	73–77%“Mid 70s”	73–80%“Mid to high 70s”
Required coursesforced into your top 6 — options are the row below	ENG4UMCV4U	ENG4UMHF4U	ENG4UMHF4U	ENG4UMHF4U
Choose one ofany of these satisfies it	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U	—	two of ICS4U, MCV4U, SBI4U, SCH4U, SES4U, SPH4U	one of SBI4U, SCH4U, SPH4U
Prerequisitesas published	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page	ENG4U MHF4U Two 4U/M science courses (Chemistry and Biology are recommended) Two other 4U/M courses 65% combined average in top six 4U/M courses +1 more on the program page	English at 60% Advanced Functions at 60% Two of Biology, Calculus & Vectors, Chemistry, Computer Science, Earth & Space Science, or Physics at 60% Prerequisite courses are calculated in the admission average.	ENG4U MHF4U Some areas also require additional prerequisites, such as SCH4U and/or SBI4U and/or SPH4U Alternative Offers Because of the competitive nature of this program, you may receive an invitation after you apply for your application to be automatically reviewed for an alternative program, provided you are qualified and there is space.
More than marks?supplementary application	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	Marks only	Marks only
Co-op	Available	No	Available	Available
Degree	—	—	—	—
First-year intakewhere published	550	—	—	150
What you study	Animal ScienceAstronomyBiological SciencesChemistry	Environmental StudiesOthers in Physical Sciences	Biological SciencesChemistryComputer ScienceOthers in Physical Sciences	AstronomyChemistryGeologyHuman Geography
What it is	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 is a four-year science degree focused on understanding natural systems and how human activity affects them. You study biology, chemistry, ecology, and earth science together rather than picking one specialty. It suits students who want a broad grounding in environmental problem-solving and are comfortable with lab work and field studies.	An Honours Science degree lets you study a science subject deeply — biology, chemistry, physics, computer science, or another physical science — and choose your own focus within it. Unlike a general science program, an Honours degree requires a concentrated major and typically includes a research or capstone component. The co-op option means you alternate between school terms and paid work placements in science-related jobs, which suits people who want real workplace experience alongside their degree.	You study chemistry, physics, astronomy, or geology at an advanced level, choosing your focus after first year. This program includes a co-op option that lets you work for employers in research, industry, or government between school terms. It suits students who are curious about how matter, energy, and natural systems work and want both hands-on lab experience and real-world work placements.
The door tomajors you reach through it	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics	environmental science	life sciencesphysics	biochemistrychemistryearth scienceenvironmental sciencephysics
Entrance awardsat this campus, by average	6 published, 5 with no applicationfrom 85%See them	7 published, 7 with no applicationfrom 80%See them	11 published, 1 with no applicationfrom 75%See them	4 published, 4 with no applicationfrom 90%See them
Source	Western University on OUInfo	Algoma University on OUInfo	Wilfrid Laurier University — Waterloo on OUInfo	University of Toronto — Mississauga 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.