QCAA Biology EA
Biology General senior syllabus 2025 - external assessment
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ExploreAbout this exam
The Biology General senior syllabus 2025 is the Queensland Curriculum and Assessment Authority syllabus for a General senior Biology course, published as Biology 2025 v1.3 and intended for implementation with students who will complete their study of the course in 2026 or beyond. It is studied by senior secondary students in Queensland working towards their Queensland Certificate of Education, typically across Units 3 and 4 in their final year. The course is assessed through a combination of school-based internal assessment and external assessment set by the QCAA. Internal instruments published as samples are a Unit 3 data test (IA1), a Unit 3 student experiment (IA2) and a Unit 4 research investigation (IA3). External assessment is organised into papers: past papers from 2020 to 2025 show a Paper 1 multiple choice question book, a Paper 1 question and response book, and a Paper 2 question and response book, each year accompanied by a marking guide. Scientific and graphics calculator lists are published as associated material. To prepare, work through the syllabus content unit by unit, then practise with the published past papers and marking guides under timed conditions, and read the yearly subject reports, which describe how students performed and where responses commonly fell short. This page is an independent study resource and is not affiliated with the QCAA.
What you'll study
About QCAA Biology EA preparation
What does the external assessment look like?
The published past papers show external assessment organised into Paper 1, which has a multiple choice question book and a separate question and response book, and Paper 2, which is a question and response book. Each year's papers are released with a marking guide.
How long is the exam and how many questions are there?
This cannot be confirmed from the syllabus page. The page lists the paper documents and marking guides but does not state a duration, total mark or item count, so check the front of a current paper and the syllabus itself rather than relying on secondhand figures.
How hard is it, and where do students lose marks?
Difficulty is not published as a figure. The most useful evidence is the yearly subject reports, which discuss how students responded and identify recurring weaknesses. Reading these before practising past papers tells you which skills, such as explaining rather than describing, examiners expect.
Can I resit the external assessment?
Retake arrangements are not described on the syllabus page. External assessment is administered under QCAA processes, so eligibility for any further opportunity depends on those rules. Ask your school's subject coordinator, who has access to current QCAA advice, rather than assuming a resit is available.
Which units does the course cover?
The sample assessment instruments are tied to Units 3 and 4: a Unit 3 data test, a Unit 3 student experiment and a Unit 4 research investigation. Internal assessment therefore sits in Units 3 and 4, with external assessment drawing on the course content from those units.
What order should I study in?
Follow the syllabus sequence unit by unit and complete each unit's content before attempting its assessment style. Practise the data test and experiment skills during Unit 3, then the research investigation in Unit 4, and only afterwards move to full past papers under timed conditions.
How should I use the past papers?
The QCAA has published papers and marking guides for 2020 through 2025. Work a paper without notes, then mark it against the guide and note where your answer differed. Repeat with later years, which reflect the most recent style, and revisit your notes on weak topics.
What can I take into the exam?
The syllabus page publishes a scientific calculator list and a graphics calculator list as associated material. Check those lists against your own calculator before exam day, since a model that is not listed may not be permitted even if it performs the same functions.
Is the syllabus changing?
Yes. Biology 2025 v1.3 applies to students who will complete their study of the course in 2026 or beyond, and the QCAA publishes a document on key senior subject changes for external assessment in 2026. Read that document if you are in the first cohort under the revised syllabus.
What internal assessment will I do?
Sample instruments are published for a Unit 3 data test (IA1), a Unit 3 student experiment (IA2) and a Unit 4 research investigation (IA3), with a sample marking scheme for the data test. These show the expected format and the standard your school-based work is judged against.