WACE · Year 12 · 2026· ATHBY

Human Biology

Units 3 and 4 · Course guide

Practise WACE Human Biology →

Course at a glance

Scales down2025 Year 12 cohort. Individual results vary. No syllabus changesFor the 2026 course. Use past examsPast papers and marking keys for practice.

What you'll study

Unit 3

Homeostasis and disease

  • Nervous coordination
  • Endocrine regulation
  • Homeostasis
  • Disease and immunity
About this unit

Study nervous and endocrine control, immunity, disease transmission and homeostatic feedback.

Unit 4

Human variation and evolution

  • Human genetic variation
  • Population genetics
  • Evolutionary evidence
  • Hominin evolution
About this unit

Connect human genetics, population variation and evolutionary evidence with hominin change.

Official resources

Start with the current SCSA syllabus, then use the supporting documents that match your course.

Current Year 12

Syllabus

Assessment

Three hours working time follows ten minutes reading time. The paper samples Units 3 and 4.

30%

Multiple-choice

30 questions · 40 min suggested

50%

Short answer

6–10 questions · 90 min suggested

20%

Extended answer

One Unit 3 and one Unit 4 response · 50 min suggested

Assessment details

Multiple-choice

Questions can use text, diagrams, data, and graphs.

Short answer

Multi-part questions draw on both units and recent research.

Extended answer

Choose one question for each unit and build two structured responses.

WACE Human Biology scaling

The 2025 cohort mean scaled score was 58.6, below TISC's all-course mean of 60.

Your score 60/ 100
Human Biology58.9/ 100Estimated scaled score
-1.1 points · Human Biology
0100
Scaled score00252550507575100100Human Biology: 60 → 58.9Your score →
━ Human Biology
2024 model · About these estimates

These curves are rough estimates from 2024 cohort summary statistics, not published individual score conversions. The input is your SCSA standardised combined score, not a school or raw exam mark. Scaling changes each year. These are Year 12 results, not predictions for Year 11.

View scaling data

Human Biology

2024 model estimates
Standardised combined scoreScaled score (out of 100)
02.8
13.7
24.6
35.6
46.5
57.4
68.4
79.3
810.2
911.2
1012.1
1113
1214
1314.9
1415.9
1516.8
1617.7
1718.7
1819.6
1920.5
2021.5
2122.4
2223.3
2324.3
2425.2
2526.2
2627.1
2728
2829
2929.9
3030.8
3131.8
3232.7
3333.6
3434.6
3535.5
3636.4
3737.4
3838.3
3939.3
4040.2
4141.1
4242.1
4343
4443.9
4544.9
4645.8
4746.7
4847.7
4948.6
5049.5
5150.5
5251.4
5352.4
5453.3
5554.2
5655.2
5756.1
5857
5958
6058.9
6159.8
6260.8
6361.7
6462.6
6563.6
6664.5
6765.5
6866.4
6967.3
7068.3
7169.2
7270.1
7371.1
7472
7572.9
7673.9
7774.8
7875.7
7976.7
8077.6
8178.6
8279.5
8380.4
8481.4
8582.3
8683.2
8784.2
8885.1
8986
9087
9187.9
9288.8
9389.8
9490.7
9591.7
9692.6
9793.5
9894.5
9995.4
10096.3
View source ↗
Practise with ATARIS → Open ATAR calculator →

Syllabus updates and paper advice

Current · 2026

No recent changes to the course

The syllabus taught from 2024 has no published assessable content change for 2025 or 2026.

Practice · older papers

Use recent exams for practice

The 2024 and 2025 exams match the current syllabus. Check earlier papers against the current syllabus.

Ahead

No replacement syllabus yet

SCSA lists future rationale, aims and General Capabilities work, but no final 2027 ATAR syllabus.

Common questions

How is the final WACE course mark calculated?

The final combined course mark weights the moderated school assessment and external SCSA examination equally: 50% each.

Does WACE Human Biology scale up or down?

Human Biology typically scales down, but this isn’t guaranteed in future years.

How should I use older WACE papers?

The 2024 and 2025 exams match the current syllabus. Check earlier papers against the current syllabus.

Human BiologyYear 11 →BiologyYear 12 →ChemistryYear 12 →

WACE · Year 12

Practise Human Biology

Build exam technique across Units 3 and 4 with syllabus-aligned Human Biology questions.

Practise WACE Human Biology →