ATAR scaling adjusts students' subject scores to ensure fairness across different subjects and levels of difficulty. It aims to make sure that no student is disadvantaged, no matter what subjects they choose. By understanding how scaling works, you can make better choices to help maximise your ATAR.
How does ATAR scaling work?
📊 Raw scores are the initial scores given based on a student's performance in each subject.
📈 Scaling adjusts these raw scores to account for subject difficulty, student performance, and the level of competition within the cohort.
🏆 The final ATAR is determined by combining these scaled scores to calculate an aggregate score, which is then used to rank students.
Why is Subject Scaling Needed?
The ATAR (Australian Tertiary Admission Rank) plays a major role in university admissions. Understanding scaling helps you make better decisions about which subjects to take in order to maximise your ATAR. Scaling is used to level the playing field by adjusting scores to reflect the varying levels of difficulty between subjects. This ensures students across Australia have a fair chance of achieving a high ATAR. In this guide, we'll explore how scaling impacts your ATAR, the factors that influence it, and how to make informed decisions to support your academic goals.
What is Raw Scoring?
Raw scores are the initial results that students receive before scaling is applied. These scores reflect how well a student performed in a subject but don't account for differences in subject difficulty. For example, a raw score in Specialist Maths might differ significantly from a raw score in General Maths, even if the students put in a similar level of effort.
How are Aggregate Scores in ATAR Calculated?
Each student's scaled scores are combined to create an overall aggregate score, which is then used to calculate the ATAR. This ATAR ranking is what universities use to determine if a student is eligible for their courses.
How Subject Scaling Works Across Different States
Scaling methods vary across different states in Australia. For instance, VTAC in Victoria and QTAC in Queensland use slightly different processes to make scores fair. Key factors include how well students perform, how difficult the subject is, and how competitive the cohort is. It’s important to understand these differences, as they can impact your ATAR depending on where you live.
ATAR subject scaling reports for 2023:
Impact of Subject Choice on ATAR Scores
The subjects you choose can have a big impact on your ATAR. Some subjects, like Specialist Mathematics, Mathematical Methods and Chemistry tend to scale well which can boost your overall ATAR.
For example:
A raw score of 81 in Specialist Mathematics can be scaled up to 95.31 ⬆️
A raw score of 86 in Mathematical Methods can be scaled up to 94.8 ⬆️
A raw score of 84 in General Mathematics can be scaled down to 78.34 ⬇️
These examples show how scaling can increase or decrease scores based on subject difficulty and the performance of other students. High-scaling subjects can be challenging and require a lot of effort to do well, but they can boost your ATAR if you succeed. Alternatively, choosing subjects that are more manageable might still lead to a good ATAR if you perform strongly.
Practical Tips for Subject Selection in 2025
When selecting subjects, it’s important to consider your personal strengths, interests and future career goals. Choosing subjects that match your student's abilities while also pushing them to grow is often the best approach. In addition, you can also consider seeking ATAR tutoring support to help you with your Year 11 and 12 studies.
Not sure what Maths subject to choose for Year 11 and 12? Check out our ATAR Maths guide where we dive into the differences between General Mathematics, Mathematical Methods & Specialist Maths.
Other helpful guides:
Frequently Asked Questions
How does the ATAR scaling system work?
ATAR scaling is a process used to adjust students' raw subject scores to ensure fairness across different subjects. Scaling takes into account the difficulty of each subject, the overall performance of students, and the level of competition in the cohort. This helps to level the playing field so that no student is advantaged or disadvantaged based on the subjects they choose.
How does course scaling work?
Course scaling adjusts scores to reflect the relative difficulty of each subject. For example, more challenging subjects like Specialist Mathematics may have their scores scaled up, while less demanding subjects may be scaled down. This adjustment ensures that students are rewarded appropriately for taking on more challenging subjects.
What are the rules for ATAR 2025?
The rules for ATAR 2025 remain similar to previous years, with a focus on fairness and comparability across different subjects and states. The ATAR is calculated based on scaled scores from your best subjects, and different states may have slight variations in their scaling processes. It is important to choose subjects that align with your strengths and future aspirations.
What are the changes to HSC 2025?
From 2025, all HSC courses with a HSC examination will be eligible for ATAR. The following subjects, which were previously Category B, are included for Year 10 students selecting subjects in 2023:
Automotive
Business Services
Construction
Electrotechnology
English Studies
Entertainment Industry
Financial Services
Hospitality
Human Services
Information and Digital Technology
Mathematics Standard 1
Primary Industries
Retail Services
Tourism Travel and Events
It's essential to stay informed about these changes, as they can impact subject selection and preparation strategies. For more detailed information, you can visit NSW Education's ATAR changes page.
How are ATAR scores calculated?
ATAR scores are calculated by combining scaled scores from your best subjects to create an overall aggregate score. This aggregate score is then used to determine your ATAR ranking. The scaling process adjusts each subject's raw score to reflect subject difficulty, ensuring a fair comparison between students across different subjects.
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