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Computer Science

Western University

Computing and Software: blue ink subject illustration
Image source

AI-generated ink illustration

Conceptual study artwork, not a photograph of teaching facilities.

Unidex · generated with ImageGen

Checked 2026-11-05

Symbolic subject artwork; no university facility depicted

Deadlines

November 2026

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Next deadline

  • OUAC. Ontario high schools report midterm/final 4U/M grades

    2027 entry

    School deadline, not a student task. Universities receive these grades by November 26. Verbatim: "Deadline for the OUAC to receive all midterm or final grades available for 4U/M courses from Ontario high schools. Schools may report in-progress grades for full-year courses as soon as they are available." Universities receive these by the target date of November 26, 2026. This is a deadline on the high school, not on the student, but it governs which grades a university sees in the first round.

    Official deadline
Other deadline details
Late September 2026Applications open on the OUAC2027 entry
  • Late September 2026
  • Page gives "Late September" under the heading "September 2026", no exact day
SourceChecked
No single OUAC deadline, deadlines are set by each university and sometimes by programOUAC Undergraduate application, applicants who are not Ontario high school students (Group B)2026 entry
  • No single OUAC deadline, deadlines are set by each university and sometimes by program
  • No single OUAC deadline
  • University, program, transcript, portfolio, interview, and audition dates still apply
Full source wording

Verbatim: "There is no specific Undergraduate application deadline if you are a Group B applicant. Deadlines vary at each university and sometimes depend on the program. Visit the university websites or contact the universities directly for their deadlines. If you are interested in a program but the deadline has passed, you may contact the university's admission office for help. Be aware of university-specific deadlines for submitting transcripts and portfolios, if required, and for arranging interviews and auditions. You must ensure the OUAC has enough time to process your choices before the universities' program deadlines." OUAC defines Group B as anyone who does not meet the Group A criteria, e.g. not currently taking an Ontario high school course, a Canadian outside Ontario, an international applicant, a postsecondary transfer student, or a mature applicant.

SourceChecked
Mid April 2027Last date to receive English Proficiency test results2027 entry
  • Mid April 2027
  • Page gives "Mid April", no exact day
SourceChecked

Requirements

Admission requirements

High-school prerequisites
  • ENG4UEnglish70% min.
  • MCV4UCalculus and Vectors70% min.
  • MHF4UAdvanced Functions70% min.
  • Ontario Secondary School Diploma with at least six Grade 12 U/M courses, excluding co-op.
  • Complete one of Mathematics of Data Management (MDM4U), Biology (SBI4U), Chemistry (SCH4U), Physics (SPH4U), Earth and Space Science (SES4U), or Computer Science (ICS4U), with at least 70%.
Western Ontario high-school admission requirements
Application steps

Entry terms · Fall 2027

Western main campus · ECS

Western Computer Science September 2027 admission and study
  1. Step 1Check the admission requirements
    • Check the published entry route for your applicant category.
    Western Ontario high-school admission requirementsWestern Ontario high-school admission requirements
  2. Step 2Apply through OUAC
    • Create your application and select this program.
    OUACOUAC
  3. Step 3Grades and final academic records
    • Current Ontario high school applicants verify grades in OUAC. Other Canadian high school applicants complete the requested Self-Reported Grades Form. Other backgrounds follow the Student Center To-Do List. Final transcript or exam results are required before starting studies.
    Western submitting your gradesWestern submitting your grades
  4. Step 4Apply through OUAC using code ECS.
    • Complete this item using the university’s applicant instructions.
    Western Ontario high-school admission requirementsWestern Ontario high-school admission requirements

Degree requirements

Credits and degree requirements
  • The department’s first-year plan requires at least 65% in CS 1026 and 1027 and at least 60% in its other listed principal courses.
  • Honours Computer Science requires a 70% average and 60% in each required course. Western’s four-year honours degree normally totals 20.0 courses.
  • The 2026 Honours Computer Science module contains 9.0 courses. Entry into the module requires no first-year failures, at least 70% across the 3.0 principal courses and no principal mark below 60%. Specified introductory programming choices require at least 65%.
ReferencesWestern Computer Science · first-year course requirementsWestern Computer Science current modules and suspended-entry noticesWestern Science Academic Advising BSc modulesWestern Senate graduation requirementsWestern 2026 Academic Calendar · Computer Science Honours Specialization

Program facts

Entering average~Low to mid 80s

Typical average for the previous incoming Ontario class.

Western Ontario high-school admission requirementsWestern Ontario high-school admission requirements
Co-opOptional paid Science Co-op for eligible four-year students

Eligible four-year students can apply from second year. The co-op designation requires at least 12 months of work, with up to 20 months available.

University work-study information
Western Science co-op eligibilityCheck work experience options

Majors & specializations

Later choices within the ECS first-year route. Minor combinations depend on the selected module.

Honours Specialization in Computer Science

BSc

Complete the broad Computer Science honours specialization.

Published requirements

Courses

Western Computer Science’s published first-year plan and selected upper-year examples. Modules determine the full course list. The departmental first-year plan and the 2026 Honours Specialization rules have different scopes.

First year4 listed

Select Calculus 1301B or Mathematics 1600A/B and complete five half-course electives.

Western Computer Science first-year course requirements
Upper-year examples3 listed
Western Computer Science September 2027 admission and study
First-year Computer Science · departmental mathematics plan2 listed

The department’s plan pairs first-year Calculus with either Calculus II or Linear Algebra I. The Academic Calendar lists additional approved mathematics options for Honours progression.

Western Computer Science · first-year course requirements
Computer Science Honours · specified upper-year courses12 listed

These are selected named courses in the 9.0-course module. Additional writing, statistics and upper-year selections apply.

Western 2026 Academic Calendar · Computer Science Honours Specialization
Study routes

Later choices within the ECS first-year route. Minor combinations depend on the selected module.

  • Game Development minor
  • Software Engineering minor

Careers

Career examples

  • Game developer
  • Network analyst
  • Software engineer
Scope and qualifications

Western’s Computer Science career examples.

Professional recognition

Western lists Computer Science Accreditation Council accreditation for the Honours Specialization and Specialization.

Scope and qualifications

Western’s Computer Science career examples.

AccreditationWestern Faculty of Science Computer Science career examplesWestern Science career examples by disciplineWestern Science co-op eligibilityWestern Science co-op work terms and designationWestern Science Academic Advising BSc modules

Costs

Computer Science

Published cost estimate

2027–28 · First-year Fall/Winter · CAD

Ontario example · Choose your category

Estimated tuition$8,683
Books and suppliesUnpublished
Residence
Residence
Not estimated
Meal plan
Not estimated
Estimated subtotalNot available

Western Registrar’s prospective Fall/Winter 2027–28 tuition estimate. The estimator identifies Computer Science as a separate fee category. Incidental fees and books are separate.

Housing and meals are outside this estimate.

Last updated

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