ICS3U, Introduction to Computer Science, Grade 11, University

ICS3U is the Grade 11 University-preparation computer science course. Students learn to design and write programs — working with variables, control structures, functions, and algorithms — and explore software development practices, computer environments, and the impact of computing on society. It’s the prerequisite for ICS4U.

No. ICS3U has no prerequisite and assumes no prior coding experience — it’s built to take motivated beginners from zero to writing working programs. Logical thinking and persistence matter more than any background. That makes it one of the most accessible entry points into a high-value university pathway.

ICS3U meets the Ministry of Education’s attendance and participation expectations through activities blended directly into the course. OES requires students to log in at least once per week for attendance, and participation activities appear throughout the course and are reflected in the grade book — preserving self-paced flexibility while satisfying the requirements for online courses.

Formally, most CS programs require ENG4U, MHF4U, and MCV4U rather than computer science courses. But ICS3U → ICS4U strengthens applications (some programs recommend it), builds the skills first-year CS assumes, and helps you confirm you actually enjoy programming before committing to a degree.

[OES: confirm the language used — commonly Python or Java.] The curriculum is language-flexible; what matters is mastering concepts like variables, loops, conditionals, functions, and algorithm design, which transfer across every language. The problem-solving approach you build matters far more than the specific syntax.

In ICS3U you write real programs of growing complexity — from simple calculations and interactive console programs to projects using functions, arrays or lists, and file input/output — culminating in a substantial software project that applies planned design, coding, testing, and documentation.

Yes. Many students take ICS3U at OES to raise a mark for university or college applications — Ontario uses your highest grade for the course. The course is self-paced and open year-round, so you can retake it alongside your day-school timetable and finish in as little as 4 weeks.

Yes. Ontario students who started Grade 9 in the 2020–21 school year or later must earn at least two online learning credits to graduate, and ICS3U at OES — a Ministry-inspected online school (BSID #667186) — counts toward that requirement. An opt-out process exists through school boards, and specific provisions apply to students affected by the 2021 school closures.

Yes. ICS3U belongs to the computer studies group, one of Ontario’s STEM-related course groups — business studies, computer studies, cooperative education, mathematics, science, and technological education. Students entering Grade 9 in 2024 or later must complete one credit from this group among their compulsory credits, and earning ICS3U at OES satisfies that graduation requirement.

Ontario’s Growing Success policy pre-determines the evaluation structure for every credit. Beginning in the 2026–27 school year, ICS3U is graded on classroom work completed throughout the course (65%) plus a Ministry-mandated final evaluation worth 25% for Grades 11–12, with attendance and participation also reflected in the final grade. A credit is granted at 50% or higher — and as an inspected private school, OES may administer final evaluations online, while school-board online courses generally require in-person exam sittings.