VCE Science Subject Selection Guide:
Chemistry, Biology or Physics?
Expert answers to the most common parent questions — from university prerequisites to early entry strategy, ATAR scaling, and subject combinations.
- 13 min read
- Melbourne, VIC
- Austin Education Academic Team
Quick Summary
Which VCE science subject should my child choose?
VCE Chemistry, Biology, and Physics each serve distinct university pathways. Chemistry is a hard prerequisite for Monash undergraduate medicine (raw 30+) and pharmacy. Biology is the most popular early entry subject and mirrors medical school study methods. Physics is most relevant for engineering. Students should treat all subjects seriously until Year 12, then decide which two become their "bottom two" based on actual performance — not on assumptions made years earlier.
Key Takeaways
- 1Chemistry is the gatekeeper for undergraduate medicine: Monash undergraduate medicine requires a minimum raw score of 30 in VCE Chemistry. Melbourne University postgraduate medicine (MD) does not require VCE Chemistry — it uses a GAMSAT and GPA pathway.
- 2VCE Biology is the top early entry subject: its study methods — memorisation, application, and analytical writing — closely mirror medical and health science degrees. Year 10 early entry frees up Year 12 for other subjects.
- 3Physics is the core subject for engineering: for mechanical, civil, electrical and software engineering, Physics is highly recommended and often a prerequisite. Monash Engineering requires either Chemistry or Physics — not both.
- 4ATAR scaling favours Chemistry and Physics: historically both scale upward, meaning raw scores convert to higher scaled scores. However, scaling changes each year — choose based on prerequisites and strengths first.
- 5Treat every subject as a "primary four" until Year 12: deciding which subjects are your "bottom two" too early limits your options. Keep all doors open and let actual Year 12 performance guide the final decision.
Not sure which combination fits your child's goals? Austin's academic advisors map university prerequisites to subject selection before Year 10 locks the pathway in.
Talk to our teamSubject Overview
Which VCE Science Is Harder — Chemistry, Biology or Physics?
A common question from parents is: "Is VCE Chemistry or Biology harder?" The honest answer is that neither is objectively harder — it depends entirely on the student's learning style. Chemistry demands mathematical reasoning and formula-based problem solving. Biology requires extensive memorisation and analytical writing. Physics combines both. The right choice depends on your child's university goal, not on which subject sounds more impressive.
VCE Chemistry — medicine, pharmacy, dentistry
Monash undergraduate medicine (raw 30+ required), pharmacy, dentistry, and biomedical science. Chemistry keeps the widest range of health science pathways open.
VCE Biology — medicine, nursing, early entry
All medicine pathways, nursing, psychology, and physiotherapy. The most popular early entry subject — its study methods mirror university health science courses.
VCE Physics — engineering and architecture
Mechanical, civil, electrical and software engineering, plus architecture. Strong mathematics is required. New 2024 study design: Units 1 & 2 from 2023, Units 3 & 4 from 2024.
A common misconception is that students aiming for medicine must take both Chemistry and Biology. In reality, the requirement varies significantly by university and pathway. Understanding these differences before Year 10 subject selection is essential to avoid locking your child into an unnecessarily heavy workload.
University Prerequisites
VCE Science Prerequisites for Medicine and Engineering
Medicine pathways
| University & Pathway | Chemistry Required? | Biology Required? | Notes |
|---|---|---|---|
| Monash undergraduate medicine | Yes — raw 30+ | Not required | Biology recommended but not mandatory |
| Melbourne University postgraduate medicine (MD) | Not required | Not required | GAMSAT and GPA pathway |
| Pharmacy (most universities) | Yes — raw 25+ | Not required | Check each individual university |
| Nursing / physiotherapy | Generally not required | Recommended | Biology provides a strong foundation |
Prerequisites change between intake years. Always confirm directly with your target university before finalising subject selection.
"If you want to study undergraduate medicine like Monash, Chemistry is a prerequisite. If you want postgraduate medicine like Melbourne Uni, Chemistry is not required." — Austin Education Academic Director
Engineering pathways
| Engineering Stream | Physics | Chemistry | Specialist Maths |
|---|---|---|---|
| Mechanical / Civil / Electrical | Core | Optional | Strongly recommended |
| Software Engineering | Recommended | Not required | Strongly recommended |
| Chemical / Materials / Biomedical | Recommended | Core | Strongly recommended |
How Austin Education Helps
- Subject selection consultation to map your child's goals to the right science combination, avoiding unnecessary workload
- University prerequisite information reviewed annually, covering all major Victorian universities and health science pathways
- A personalised roadmap from Year 9 through VCE, aligned with each student's target degree and subject strengths
Assessment Structure
How SACs and Exams Are Weighted Across Chemistry, Biology and Physics
All three VCE science subjects share the same overall split: SACs contribute 50% and the end-of-year exam contributes 50%. However, the distribution between Unit 3 and Unit 4 SACs differs significantly — particularly for Physics, where Unit 3 SACs carry a higher weighting than Unit 4. This has strategic implications for how students should prioritise their effort across the year.
| Subject | Study Design | Unit 3 SAC | Unit 4 SAC | End-of-Year Exam |
|---|---|---|---|---|
| VCE Chemistry | 2023–2027 | 20% | 30% | 50% |
| VCE Biology | 2022–2027 | 20% | 30% | 50% |
| VCE Physics | U1&2: 2023–2027 · U3&4: 2024–2027 | 30% (highest) | 20% | 50% |
Strategic insight: Physics students should treat Unit 3 SACs as their highest priority — they contribute 30% of the final study score, the highest single SAC component across all three sciences. For Chemistry and Biology students, Unit 4 SACs (30%) carry more weight than Unit 3 SACs (20%), meaning the second half of the year is particularly critical. All three subjects have a 50% exam component, so consistent SAC performance and strong exam preparation are both essential.
Early Entry Strategy
VCE Early Entry Science: When and How to Accelerate in Year 10
VCE early entry means studying Units 1–2 in Year 10 and sitting Units 3–4 in Year 11 — one year ahead of the standard timeline. Biology is the most popular choice because its learning methods directly prepare students for university health science study. Early entry requires school approval and is based on academic performance.
Standard timeline — Year 11: Units 1–2 · Year 12: Units 3–4
The default pathway. Provides a full year to build foundational knowledge before the high-stakes Unit 3–4 exam.
Early entry timeline — Year 10: Units 1–2 · Year 11: Units 3–4
Frees up Year 12 for other subjects. Requires school approval during Year 9 subject selection, and is based on academic performance and readiness.
How Austin Education Helps
- Pre-VCE Biology, Chemistry and Physics courses in Years 9–10, bridging the gap between day school science and VCE Units 1–2
- Early entry readiness assessment to determine whether a student is academically prepared to accelerate, and which subject to prioritise
- Structured Unit 1–2 catch-up programs for students who missed foundational content before entering Units 3–4
ATAR Scaling
VCE Science ATAR Scaling: Does Chemistry Scale Better Than Biology?
ATAR scaling adjusts raw study scores to account for the difficulty of each subject and the academic ability of the cohort who chooses it. Historically, Chemistry and Physics have scaled upward — meaning a raw score of 35 in Chemistry may convert to a higher scaled score than 35 in a less-scaled subject. Biology typically scales more neutrally. Scaling is recalculated every year, so it should inform subject selection rather than drive it.
Without strategic subject selection
- Choosing subjects based on what sounds impressive, not university requirements
- Taking both Chemistry and Biology without a clear pathway goal
- Overloading Year 12 with too many demanding subjects
- Missing the Chemistry prerequisite for Monash medicine
- Deciding "bottom two" subjects too early in Year 10
With Austin Education guidance
- Subject selection mapped to specific university prerequisites
- Early entry strategy planned from Year 9 for maximum benefit
- Balanced workload across Years 11 and 12
- ATAR scaling considered alongside personal strengths
- All subjects treated as a "primary four" until Year 12 performance data is available
Course Materials
One Teaching System Across All Three Sciences
Whichever combination a student ends up with, Austin's Chemistry, Biology and Physics classes run on the same structure: in-house exercise books mapped dot point by dot point to the current study design, mock SACs scheduled ahead of each school assessment, and teachers who specialise in a single subject.
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Click to view full sizeFrequently Asked Questions
VCE Science Subject Selection: Frequently Asked Questions
Which VCE science subject should I choose?
It depends on your university goal. Choose Chemistry if you are targeting Monash undergraduate medicine, pharmacy, or dentistry. Choose Biology if you are aiming for any medicine pathway, nursing, or physiotherapy, and want to consider early entry in Year 10. Choose Physics if you are targeting mechanical, civil, electrical, or software engineering. Many students take two sciences — the key is to match your subject selection to your actual university pathway.
Is VCE Chemistry or Biology harder?
Neither is objectively harder — it depends on the student's learning style. Chemistry demands strong mathematical reasoning, formula application, and precise written responses. Biology requires extensive memorisation, application of biological concepts, and analytical writing. Students who are stronger in maths typically find Chemistry more manageable; students who prefer reading and writing tend to find Biology more accessible. Both require consistent weekly study.
Do I need Chemistry for medicine in Victoria?
It depends on the pathway. Monash undergraduate medicine (direct entry) requires a minimum raw score of 30 in VCE Chemistry. Melbourne University postgraduate medicine (MD) does not require VCE Chemistry — it uses a GAMSAT and GPA pathway. If your child is targeting Monash undergraduate medicine, Chemistry is mandatory. If they are open to postgraduate medicine at Melbourne University, Chemistry is not required. Always confirm prerequisites with your target university before finalising subject selection.
Is VCE Physics required for engineering?
For most engineering disciplines — mechanical, civil, electrical, and software — VCE Physics is strongly recommended and often a prerequisite. Monash Engineering requires either Chemistry or Physics as a science prerequisite, not both. If a student is already taking Physics, Chemistry is not automatically necessary unless they are targeting chemical, materials, or biomedical engineering. Physics provides the most direct preparation for engineering university content.
What is VCE early entry and which science is best for it?
VCE early entry means studying Units 1–2 in Year 10 and sitting Units 3–4 in Year 11. Biology is the most popular subject for early entry because its study methods — memorisation, application, and analytical writing — closely mirror those used in university medical and health science courses. Early entry requires school approval during Year 9 subject selection and is based on academic performance.
Can I take both VCE Chemistry and Physics?
Yes, but it requires careful planning. Both subjects demand strong mathematics skills and consistent weekly study. If a student has a solid foundation and good time management, taking both is achievable. However, if the workload becomes overwhelming, it is generally better to prioritise the subject most aligned with university goals — Physics for engineering, Chemistry for medicine or pharmacy.
How does ATAR scaling work for VCE science subjects?
ATAR scaling adjusts raw study scores to account for the difficulty of each subject and the academic ability of students who choose it. Historically, Chemistry, Physics, and Specialist Mathematics have scaled upward, while Biology typically scales more neutrally. However, scaling changes each year and should not be the primary reason for choosing a subject — choose based on university prerequisites and personal strengths first.
When should I decide which VCE science subjects to take?
The decision should ideally be made by the end of Year 9, as Year 10 subject selection determines which subjects you can study in Year 11. Austin Education recommends treating all potential science subjects seriously during Year 9 and early Year 10, then making a final decision based on academic performance, university goals, and teacher recommendations. Avoid making assumptions years in advance — let actual performance data guide the decision.
Not Sure Which Science Subject to Choose?
Speak with Austin Education's academic advisors. We map your child's university goals to the right science combination — avoiding unnecessary workload while keeping all pathways open.
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- VCE Subject Scaling: Choosing Subjects Strategically — how scaling actually works across the full VCE subject list.
Austin Education is a Melbourne-based VCE tutoring centre with over 10 years of experience, offering VCE Chemistry, Biology and Physics tutoring for Years 9–12. University prerequisite data is sourced from official university websites; VCAA study design information from vcaa.vic.edu.au. Accreditation: VCE Biology 2022–2027; VCE Chemistry 2023–2027; VCE Physics Units 1 & 2 2023–2027, Units 3 & 4 2024–2027.