Quebec Science Pathways Guide
Plan science courses as a connected sequence.
Understand Secondary 4 Science and Technology pathways, environmental science options, Secondary 5 Chemistry and Physics, ministerial exams and CEGEP prerequisites.
The broad pathway map
From common science to optional courses
Names and delivery depend on the general or applied education path and the school’s actual course offering.
Secondary 3 foundations
Build core scientific literacy, technical problem solving, laboratory habits, measurement and explanation.
Secondary 4 core
Science and Technology (ST) or Applied Science and Technology (ATS), according to the student’s pathway.
Secondary 4 extension
Environmental Science and Technology (STE) or Science and the Environment (SE) can provide access to later optional sciences.
Secondary 5 options
Chemistry and Physics are separate optional courses commonly relevant to science-oriented CEGEP preparation.
Course-language guide
Understand the abbreviations
English and French schools may use different abbreviations for corresponding Quebec programs.
Science and Technology
The Secondary 4 core course in the General Education Path, integrating scientific and technological competencies.
Applied Science and Technology
The Secondary 4 core course in the Applied General Education Path, with a strong applied and technological orientation.
Environmental Science and Technology
An optional extension associated with the General Education Path that supports access to Secondary 5 science options.
Science and the Environment
An optional course associated with the Applied General Education Path that supports the relevant continuation route.
Pathway comparison
Ask what each course enables
The school’s guidance team should confirm local sequences, credits and placement conditions.
| Course | Typical level | Role in the pathway | What to verify |
|---|---|---|---|
| ST | Secondary 4 | Core science and technology in the general path | Credits, exam code and whether STE is bundled or separate |
| ATS | Secondary 4 | Core applied science and technology | Credits, exam code and connection to SE |
| STE | Secondary 4 option | Environmental extension supporting later science options | Entry criteria, schedule and Chemistry/Physics access |
| SE | Secondary 4 option | Environmental science option in the applied route | How it combines with ATS and later access |
| Chemistry | Secondary 5 option | Preparation for programs needing senior chemistry | Prerequisite science and mathematics, lab hours and offering |
| Physics | Secondary 5 option | Preparation for programs needing senior physics | Prerequisite science and mathematics, course availability |
Decision framework
Science readiness is more than a science grade.
Students need enough mathematical fluency, reading precision, laboratory discipline and independent study capacity to manage the complete course package.
Mathematics
Manipulate formulas, interpret graphs, use proportional reasoning and track units accurately.
Scientific literacy
Read dense explanations, connect evidence to concepts and write precise conclusions.
Laboratory practice
Follow procedures, record observations, manage uncertainty and respect safety rules.
Workload
Balance science options with mathematics, languages and other graduation requirements.
CEGEP prerequisites
Verify the exact course—not “advanced science”
Different pre-university and technical DEC programs can require different combinations.
List target programs
Include more than one realistic DEC and record the official program page for each.
Copy every prerequisite
Record the exact mathematics, ST/ATS, STE/SE, Chemistry and Physics wording.
Confirm school access
Verify that the courses will run, the student meets placement criteria and schedules can fit.
Review after results
Reassess the plan after Secondary 4 results and adjust targets or support before Secondary 5.
Secondary 4 ministerial exam
Know the exact course code
The current official information document distinguishes the science programs and assessed components.
Science and Technology
The ministerial information identifies the applicable theory component and administration for the ST course.
Applied Science and Technology
ATS has its own corresponding examination code and course-specific content.
Final-result impact
Secondary 4 ministerial examinations count for 50% of the final result for the competency or competencies evaluated.
Chemistry readiness
Concepts, mathematics and laboratory evidence
Chemistry requires more than memorizing vocabulary or formulas.
Particle models
Connect observable changes to representations at the particle and symbolic levels.
Quantitative reasoning
Use ratios, equations, units and proportional relationships accurately.
Experimental work
Interpret procedures, measurements, sources of error and evidence-based conclusions.
Scientific writing
Explain mechanisms and justify claims with correct terminology and logical steps.
Physics readiness
Translate between the real world and mathematical models
Physics becomes difficult when algebra, diagrams and conceptual reasoning are disconnected.
Representations
Move among words, diagrams, graphs, vectors and equations.
Algebraic control
Rearrange relationships, substitute with units and reason proportionally.
Conceptual models
Predict behaviour before calculating and test whether the result is physically plausible.
Problem structure
Identify knowns, unknowns, constraints and a multi-step solution path.
Common planning mistakes
Avoid last-minute prerequisite surprises
Most problems begin before the course starts.
“Chemistry and Physics are one package.”
They are separate Secondary 5 options. Availability and prerequisites must be checked for each.
“ST alone opens every science route.”
Some target programs require the environmental extension and Secondary 5 sciences.
“A strong science mark is enough.”
Mathematics fluency and reading precision may be the hidden bottleneck.
“The school always offers both.”
Course offerings can depend on enrolment, staffing, schedule and local policy.
“We can upgrade instantly later.”
Upgrading routes exist, but they may add time, cost and application complexity.
“Prestige should decide.”
Choose science options because they support a realistic destination and match readiness.
Preparation roadmap
Build science strength in four stages
The best preparation links concepts, mathematics and experimental reasoning.
Diagnose
Separate gaps in science concepts, mathematics, vocabulary, lab skills and organization.
Rebuild
Teach prerequisite concepts and mathematical tools before adding complex applications.
Integrate
Combine diagrams, data, formulas, evidence and written explanations in complete tasks.
Perform
Use timed mixed problems, lab-analysis questions and exam-format practice with feedback.
From course choice to mastery
Science support matched to the pathway
College HC helps students strengthen prerequisites, manage current courses and prepare for the Secondary 4 exam.
Greater Montreal
Join classes at our Saint-Laurent centre or combine in-person instruction with online support.
- ST, ATS and environmental science support
- Chemistry and Physics tutoring
- Ministerial exam preparation
Across Quebec
Live online instruction for Gatineau, Quebec City, Sherbrooke and families throughout the province.
- Interactive online small groups
- One-to-one science tutoring
- Assessments and parent feedback
Frequently asked questions
Quebec science-pathway questions
What is the difference between ST and ATS?
ST is associated with the General Education Path, while ATS is associated with the Applied General Education Path. Both develop scientific and technological competencies, but their orientations and course structures differ.
What do STE and SE do?
They are environmental science options associated with their respective Secondary 4 routes and support access to optional Secondary 5 science courses. Confirm the exact local sequence.
Are Chemistry and Physics mandatory for a secondary diploma?
They are optional Secondary 5 courses rather than universal diploma requirements, but they may be required for specific CEGEP programs.
Does every school offer Chemistry and Physics?
Not necessarily. Offerings can depend on the institution, enrolment, staffing and timetable. Verify before building an admission plan around them.
How much is the Secondary 4 science ministerial exam worth?
Secondary 4 ministerial exams count for 50% of the final result for the competency or competencies evaluated. Use the current official information document for the exact course and year.
A science path with direction
Not sure which science courses your child needs?
Book a focused consultation to review target prerequisites, current readiness and the preparation required for the next course.
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