3 programs, side by side

+ Add a program	Western Computer Science OUAC ECS ☆ Add to planRemove	Waterloo Environmental Engineering (Co-op Only) OUAC WEE ☆ Add to planRemove	Western Science OUAC ES ☆ Add to planRemove
Your average, their wayrequired courses forced in
Published rangetheir exact wording	80–87%“Low to mid 80s”	83–90%“Mid- to High 80s”	80–87%“Low to mid 80s”
Required coursesforced into your top 6 — options are the row below	ENG4UMCV4UMHF4U	ENG4UMCV4UMHF4USCH4USPH4U	ENG4UMCV4U
Choose one ofany of these satisfies it	one of ICS4U, MDM4U, SBI4U, SES4U, SPH4U	—	two of ICS4U, MDM4U, MHF4U, SBI4U, SES4U, SPH4U
Prerequisitesas published	English, ENG4U Calculus and Vectors MCV4U Advanced Functions, MHF4U One of: Biology, SBI4U +5 more on the program page	English (ENG4U – min. 70%) Advanced Functions (min. 70%) Calculus and Vectors (min. 70%) Chemistry (min. 70%) Physics (min. 70%)	English, ENG4U Calculus and Vectors MCV4U Two of: Advanced Functions, MHF4U Biology, SBI4U +7 more on the program page
More than marks?supplementary application	Marks only	Yes NEW: All Engineering program applications require an online video interview. You will receive more information after you apply. An Admission Information Form is also required. We will send you instructions when we acknowledge your application. Also considered: Involvement in extracurricular activities in school or community, evidence of interest in engineering and strong performance in mathematics, science or engineering-related competitions. 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
Co-op	Available	Available	Available
Degree	—	—	—
First-year intakewhere published	500	75	550
What you study	Computer GamesInformation ServicesSoftware Engineering	Biological SciencesChemical EngineeringCivil EngineeringEnvironmental Studies	Animal ScienceAstronomyBiological SciencesChemistry
What it is	Computer Science at Western teaches you how to write programs, build software systems, and solve problems using computers and code. You choose a focus — such as game development, managing information systems, or engineering robust software — based on your interests. The program includes paid work terms alongside your studies, letting you apply classroom learning in real jobs and build professional experience before you graduate.	You study how to design systems and structures that protect the environment and manage natural resources — combining biology, chemistry, civil engineering, and earth science. Unlike a general engineering program, this one focuses specifically on water treatment, waste management, air quality, and land remediation. It suits students who want to solve real environmental problems with engineering tools and are willing to do mandatory work terms alongside their studies.	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.
The door tomajors you reach through it	computer science	Applied to directly	biologychemistryearth scienceenvironmental sciencelife sciencesmathematicsphysicsstatistics
Entrance awardsat this campus, by average	6 published, 5 with no applicationfrom 85%See them	4 published, 3 with no applicationfrom 80%See them	6 published, 5 with no applicationfrom 85%See them
Source	Western University on OUInfo	University of Waterloo on OUInfo	Western University 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.