Part 1: How VCE Study Scores are Calculated

In the Beginner’s Guide to ATAR and Scaling (VCE), we explained how your study score is your rank reflecting how well you performed in a subject compared to other students across Victoria. This score helps determine your ATAR (Australian Tertiary Admission Rank), which universities use for admission.

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Now, let’s break down the process, step-by-step, to help you understand how your study score is calculated.

How study scores are calculated

1. The assessments

Your study score comes from three areas in each study:

• School-Assessed Coursework (SACs):

• • Unit 3 SACs: Assessments during the first half of the year.
  • Unit 4 SACs: Assessments during the second half of the year.

• Final Exam: The big test at the end of the year.

Example:

2. Standardising your scores

Your raw scores from these assessments are adjusted to account for differences in difficulty and performance. This adjusted score is called a standardised score.

3. Weighting of assessments

To calculate the final VCE study score, the VCAA (Victorian Curriculum And Assessment Authority) combines the standardised scores for each of your Graded Assessments (GA). Keep in mind that each type of assessment has a different weight in the final score:

• Unit 3 Coursework: 25%
• Unit 4 Coursework: 25%
• Final Exam: 50%

This means each part of your assessments contributes a certain percentage to your overall study score.

The weighted scores are combined to get your summative weighted standardised GA score:

(Standardised Unit 3 Score×0.25)+(Standardised Unit 4 Score×0.25)+(Standardised Exam Score×0.50) = your summative weighted standardised GA score

4. Converting into the study score

After calculating everyone’s summative weighted standardised GA scores, students are ranked from highest to lowest based on their total scores.

Then, these ranks are adjusted to fit a normal distribution (a bell curve). This means scores are spread out with an average of 0 and a standard deviation of 1.

Finally, these adjusted scores are converted to a scale where the average score is 30 and the standard deviation is 7. This means most study scores will be between 23 and 37. The final rank you receive after this process is your actual study score.

Understanding your study score

• Raw study score: Ranges from 0 to 50. A score of 30 is average, meaning you did better than half of the students. A score of 40 means you did better than about 91% of students.
• Top scores: A perfect score of 50 is very rare. A score above 40 is excellent and puts you in the top 8% of students.

Example study score calculation

Let’s say Mary’s scores were: 

• Unit 3 Coursework: 75 (standardised score: 1.67)
• Unit 4 Coursework: 80 (standardised score: 2.00)
• Final Exam: 90 (standardised score: 2.50)

Here’s how to calculate Mary’s final study score:

(Standardised Unit 3 Score×0.25)+(Standardised Unit 4 Score×0.25)+(Standardised Exam Score×0.50) = your final weighted standardised GA score

(1.67×0.25)+(2.00×0.25)+(2.50×0.50)

This works out to:

0.4175+0.50+1.25=2.16750

So Mary’s final weighted standardised GA score is around 2.17.

If Mary’s normalised score falls at 1.67 on the adjusted scale, it would translate to a study score slightly above 40, depending on how other students performed that year.

Scaling your study score

Scaling adjusts your study score based on the difficulty of the subject. This helps make sure your score is fair compared to other subjects. Read more about scaling your study score in Part 2.

How your school performance affects your SAC scores

Yes, how well you do in school can influence your study score. Here’s how:

1. Preparation and consistency: If you consistently do well in your coursework and exams throughout the year, you’re more likely to perform better on your final assessments. Regular studying and staying on top of your work will make a big difference to your scores.
2. Understanding the material: Strong overall performance usually means you have a good grasp of the subject. This understanding helps you score well on SACs and exams, leading to a higher study score.
3. Participation: Being active in class and participating in discussions can improve your understanding of the subject, which can result in stronger scores in your SACs and exams.
4. Homework and assignments: Completing homework and assignments on time and to a high standard helps build a solid foundation of knowledge, which contributes to better performance on SACs and exams.

Your overall performance in school, like how well you study, participate, and complete assignments, can affect your study score. Good habits and strong performance throughout the year typically lead to a higher study score.

Tips for success

• Do well in all parts: Since the final exam is the most important, make sure you perform well in both your SACs and the exam.
• Know the averages: Understanding state averages and deviations can give you an idea of where you stand.
• Aim high: Try for scores above 40 to boost your ATAR and stand out.

By following these tips and understanding how your study score is calculated, you’ll be better prepared to manage your studies and aim for a great ATAR. Good luck!

Now, let’s look at scaling your VCE study score.