If your child is starting Year 11 in WA, you are about to encounter a small avalanche of acronyms: WACE, ATAR, OLNA, TEA, SCSA, TISC. None of them are particularly complicated once explained. This guide does that in plain English.
The basics in 60 seconds
- WACE = Western Australian Certificate of Education. The Year 11-12 qualification. Awarded by SCSA.
- ATAR = Australian Tertiary Admission Rank. A 0-99.95 percentile rank used for university entry.
- SCSA = School Curriculum and Standards Authority. The WA government body that runs WACE.
- TISC = Tertiary Institutions Service Centre. Calculates ATARs and processes WA university applications.
- OLNA = Online Literacy and Numeracy Assessment. A test all WA students must pass to receive a WACE.
What does it take to graduate with a WACE?
To receive a WACE certificate, your child must:
- Complete a minimum of 20 units across Year 11 and 12 (most schools handle this automatically).
- Achieve a C grade average across all subjects.
- Pass OLNA (or pre-qualify via Year 9 NAPLAN at Band 8+).
- Take at least one English subject (English ATAR, Literature, EALD, or Foundation English).
- Complete two subjects across List A (humanities) and two across List B (mathematics/science).
Most students who attend Year 11 and 12 in WA achieve their WACE. The bigger question is what ATAR they receive.
What is the ATAR and how is it calculated?
The ATAR is a percentile rank. An ATAR of 90 means your child performed in the top 10% of all students who started Year 11 in their state. It is not a percentage of marks; it is a relative ranking.
The ATAR is calculated like this:
- Your child takes 4 to 6 ATAR subjects.
- Each subject's raw mark (out of 100) is scaled by TISC.
- The top 4 scaled marks are added together to make the TEA (Tertiary Entrance Aggregate).
- The TEA is converted to an ATAR via a percentile rank table.
What is scaling and should I be worried about it?
Scaling is TISC's adjustment to subject marks based on cohort strength. Subjects with stronger cohorts (Mathematics Specialist, Chemistry, Physics) scale up. Subjects with weaker cohorts on average (Mathematics Applications, some general courses) scale down.
The scaling adjustment is meaningful but not as dramatic as parents fear. The 2025 TISC report shows:
- Mathematics Specialist: a raw 70 scales to ~80 (lifts +10).
- Chemistry: a raw 70 scales to ~78.7 (lifts +8.7).
- English: a raw 70 scales to ~70 (no significant change).
- Mathematics Applications: a raw 70 scales to ~67 (drops -3).
The implication for parents: your child should take subjects they can score well in. Scaling does not save a low raw mark, and a high raw mark in a low-scaling subject still produces a respectable scaled mark.
Read more in our WACE scaling explained post or use the ATAR calculator to see how subject combinations work for your child.
How many ATAR subjects should my child take?
Most students take 5 ATAR subjects. SCSA requires 4 minimum to qualify for an ATAR.
- 5 subjects = standard high-ATAR strategy with a buffer.
- 4 subjects = lighter load, no buffer if one underperforms.
- 6 subjects = aggressive load for very strong students.
Talk to your child's school career counsellor about what works for their capacity.
Year 11 vs Year 12: what's the difference?
| Year 11 | Year 12 | |
|---|---|---|
| Counts toward ATAR? | No | Yes (school assessment + external exam) |
| OLNA | March/Sept windows; aim to pass by end | March/Sept windows if not already passed |
| Internal exams | Half-yearly + end-of-year | Half-yearly + end-of-year (50% of school mark) |
| External exams | None | Late October to mid-November |
| Workload | ~15-20 hrs/week study | ~25-30 hrs/week study |
What can I do to support my child?
- Set the environment. A dedicated study desk, no phone during study sessions, consistent sleep schedule. These are the biggest single supports you can offer.
- Ask weekly: what was the hardest thing you did this week? Better than asking about grades. The conversation reveals where they are struggling.
- Pay attention to mental health. Year 12 has high stress. If your child is unusually withdrawn, irritable, or losing sleep, talk to their school counsellor.
- Don't compare. "Your sister got 95+" is the most counterproductive sentence in WA Year 12 households. Each student's path is their own.
- Plan a post-exam recovery. The week after exams should be rest. The week after that, encourage some non-academic activity.
What about tutoring?
Most ATAR students in Perth use tutoring at some point. The decision is about return on investment, not status. Effective tutoring:
- Marks past papers with exam-equivalent rubrics.
- Identifies specific syllabus dot points the student has not mastered.
- Builds weekly cadence rather than catch-up cramming.
- Coordinates with the student's school content, not separate from it.
Read our tutoring cost guide for what to expect when comparing options.
Key dates for Year 12 in 2026
- March: Year 12 OLNA window 1 (if not already passed).
- July school holidays: critical revision period before Term 3.
- September: TISC application deadline; personalised exam timetable available.
- 26 September: WACE practical exams begin.
- 28 October: WACE written exams begin.
- 19 November: WACE written exams end.
- Mid-December: WACE results released.
- Late December / early January: TISC offers issued.
What should I do this term?
- Set up a weekly conversation with your child. Friday afternoon over a cup of tea works well.
- Get familiar with the SCSA student portal (studentportal.scsa.wa.edu.au) so you know what your child sees.
- If your child is in Year 11 and uncertain about subject choice, use our ATAR calculator together.
- If you want help working out how to support without overstepping, book a free trial class at one of our centres. The trial is for your child but we can talk to parents during the consultation.