If your child is heading into Year 12, the external exam block is the single most important academic event in their senior schooling. It is one set of three or four weeks, late in the year, that finalises 25% of every General subject result (50% for Maths and Sciences) and feeds directly into the ATAR calculation.
Most Queensland families approach the external exams later than they should, then panic. This guide walks through what they actually are, how they fit into the broader ATAR machinery, and a four-stage preparation plan you can use to make the run-in less stressful for your child.
For specific date details, see the section at the bottom: "Where to find the current year's exam timetable". We deliberately do not list specific dates in this article so it stays accurate as years roll over.
What is a QCAA external exam?
In Year 12, every General subject has four assessments:
- Internal Assessment 1 (IA1) , set, run, and marked at the school, moderated by QCAA.
- Internal Assessment 2 (IA2) , same.
- Internal Assessment 3 (IA3) , same.
- External Assessment (EA) , written and marked entirely by QCAA, sat on a fixed date at the end of Year 12.
For most subjects, each of the four assessments is worth 25% of the final subject result. For Mathematics and Science subjects (Specialist Maths, Mathematical Methods, General Maths, Physics, Chemistry, Biology, Psychology), the external is worth 50% and the three internals share the other 50%.
That weighting is important. A student who has cruised through their internals in Methods or Physics with strong As and then bombs the external can drop a full grade in their final subject result.
How external exams fit into the ATAR
To recap from our ATAR calculation guide:
- 1.QCAA combines the internals and external into one subject result out of 100.
- 2.QTAC scales that subject result based on how the cohort performed across all their other subjects.
- 3.QTAC takes the top five scaled subject results and turns them into a Tertiary Entrance Aggregate.
- 4.The TEA gets converted into a percentile rank , the ATAR.
The external exam result is one of four inputs into the subject result. But because of the heavy weighting in Maths and Science subjects, and because students often peak (or crash) on the external compared to their internals, it has an outsized effect on the final ATAR.
A useful rule of thumb: the external exam can move a final subject result by up to a full letter grade in either direction.
General vs Applied: only General subjects have external exams
If your child is doing all General subjects, they will sit an external exam in every one. If they are doing one or two Applied subjects, those subjects do not have external exams , they are 100% internally assessed.
This matters for two reasons:
- ATAR eligibility. Only General subjects (plus, at most, one specific Applied subject, or a Cert III VET) count toward the ATAR. A student doing four Generals and three Applieds typically gets an ATAR; a student doing three Generals and four Applieds typically does not.
- Exam load. A student doing five Generals will sit five external exams. A student doing four Generals and one Applied will sit four. The total exam load matters for stamina planning, which we get to below.
When the external exams happen
The QCAA external exam block runs across approximately three to four weeks in late October and November every year. Within that window, each subject has one specific exam date (and for some larger subjects, an additional paper on a separate date).
QCAA publishes the official, dated timetable for each year. The current timetable is the only one you should plan from , see the section at the bottom of this article.
The general shape of the block:
- Early Term 4 , school continues with revision, mock exams, practice papers.
- External exam block , students sit their external exams on the dates QCAA has set. Most subjects have a single exam paper of 2 hours plus 10 to 15 minutes' planning time.
- December , QCAA marks the externals.
- Mid-late December , students receive their final subject results.
- Late December / January , QTAC issues ATARs, university offers begin.
The four-stage preparation plan
This is the plan we walk families through at Pythora. Adjust the timing to your child's school and subject mix.
Stage 1: Early Term 3 , build the foundation
By the start of Term 3, your child should have completed all three internal assessments for the year. The external content typically draws on the entire two-year syllabus, including Year 11 material that was assessed early.
What to do in early Term 3:
- Make a complete list of every topic that could appear on the external for each subject. The QCAA syllabus document for each subject lists them explicitly.
- Identify the topics your child has not revisited since Year 11. Most students have at least four or five of these per subject.
- Build a topic-by-topic review schedule across the remaining months. Plan to spend more time on topics that were taught early or taught poorly.
This is the stage most students skip. Without it, exam revision starts cold in October.
Stage 2: Mid-Term 3 to early Term 4 , practice under content
Once topic review is underway, start practice questions on the topics being reviewed.
What works:
- QCAA sample external exams (published on their website for most subjects).
- Past school mock exams if available.
- Practice questions from textbooks, organised by topic to start, then mixed in random order as the exam approaches.
What does not work (despite being popular):
- Doing full past exams cold before topic review is finished. Students lose confidence on questions they could have done with one more pass through the content.
- Watching tutoring videos passively without working through the questions yourself. Comprehension is not retention.
Stage 3: Last 4 to 6 weeks , full practice papers, timed
The closer the exam, the more your child's revision should look like the exam itself.
A good cadence in the final 4 to 6 weeks:
- One full timed past paper per subject per week, in the actual exam conditions (closed book if applicable, full time limit, no phone).
- Detailed mark-up of every question they lost marks on, with a focus on *why* they lost the marks (technique, content gap, careless mistake).
- Follow-up practice on the specific topic that caused each lost mark.
Most students who underperform on the external did not do enough timed full papers. The exam is not just a content test , it is a stamina test, a time-management test, and a question-reading test.
Stage 4: Exam week , execute the plan
The week of the exam block is not the time to learn new content. The work has been done; the goal is to perform.
What helps:
- Sleep more than usual, not less.
- Light review of formula sheets, common mistakes, and exam technique notes. No new content.
- Plan logistics: where the exam is, how long the trip is, what to bring (approved calculator, ID, water, snacks).
- Eat real food, not energy drinks.
What does not help:
- All-nighters. They wreck performance on the next day's exam.
- Last-minute cramming of content the student does not already know. Better to be rested and apply what they do know well.
The five most common external exam mistakes
After watching cohort after cohort go through this, we see the same handful of mistakes:
1. Underestimating the role of question reading. External exam questions are written carefully. Students who skim end up answering the question they expected rather than the question that was asked. Read the question three times before starting an extended response.
2. Spending too long on one question. A student who burns 25 minutes on a difficult question that was only worth 4 marks will lose more marks elsewhere by not finishing. Move on. Come back if there is time.
3. Not planning extended responses. A 60-second plan saves 5 minutes of unfocused writing and earns more marks. Always plan.
4. Skipping the easy marks. Every external exam has marks that are essentially free for any prepared student. Method marks in Maths. Definitions in Science. Quote identification in English. Make sure these are never missed.
5. Not learning from internal assessment feedback. The IAs your child has already sat tell you exactly where they lose marks. Most students never read their IA feedback in detail. The students who do, target those exact weaknesses for the external.
Where to find the current year's exam timetable
QCAA publishes the official external exam timetable on its website each year, usually well before the exam block. The timetable lists every subject, the exam date, the exam time, and the duration.
To find the current year's official timetable:
- 1.Search "QCAA external assessment timetable [current year]" on Google.
- 2.The first result will be the QCAA website (qcaa.qld.edu.au).
- 3.Download the PDF and cross-check it against your child's subject list.
We deliberately do not list dates in this article because they change every year, and outdated dates would do more harm than good. Always plan from the QCAA-published timetable directly.
How tutoring fits in for the external
Honestly: external exam preparation is where good tutoring genuinely shifts subject results.
Most schools run revision sessions in Term 3 and Term 4, but the depth varies wildly. The schools that do this well are the schools where students consistently perform on the external. The schools that do this poorly are the schools where strong internal performers underperform on the external.
A tutor who recently sat the same external exam your child is preparing for will know exactly which questions historically cause the most lost marks, which topics need the deepest review, and which IA feedback patterns predict external mistakes.
At Pythora, every senior tutor sat the same QCAA external assessment within the last few years and scored above 95. That is the entire selection criterion.
TL;DR
- The external exam is one of four assessments in every General subject. It is 25% of the final subject result for most subjects, 50% for Maths and Science.
- External exams happen in late October and November each year. QCAA publishes the official timetable on their website.
- Only General subjects have externals. Applied subjects are 100% internally assessed.
- The four-stage preparation plan: foundation in early Term 3, topic-by-topic practice mid-Term 3, full timed papers in the last 4 to 6 weeks, execute in exam week.
- The biggest preventable mistakes are poor question reading, time mismanagement, and not learning from IA feedback.
- Tutoring genuinely helps in the run-up to externals, because the techniques rewarded by the marking criteria are not always taught explicitly in class.
Want a tutor for the run-in to your child's externals? The sidebar on this page (or the button below) takes you to the trial form.