Courses are scaled so that the mean and distribution of the marks obtained in the course are consistent with the mean and distribution of marks that the students taking that course obtain in all of their HSC subjects. This means that courses that are taken by many students with high levels of achievement in all their courses as is usually the case for courses such as Mathematics Extension 2 and Physics award a higher proportion of high scaled scores than courses that are mainly taken by students with an average level of achievement across all their courses.
However, even in subjects that have a high proportion of high scaled scores, you still need to achieve a high HSC mark in order to obtain a high scaled score. In fact, for most courses, your scaled mark will be lower than your HSC mark.
Your scaled mark in a course will be influenced by your position in the course and the scaled mean for that course. The example below shows a set of HSC and scaled marks corresponding to results at the 90th percentile for each course. This is because in NSW the ATAR is calculated from 2 units of English even if they are your lowest units, as in this example plus the next best 8 units to make 10 units in total , and in this example, Society and Culture has the lowest scaled mark of all the courses apart from English.
Scaled marks are not reported to students. If you wish, you can complete a 2-unit course one year and the corresponding extension course in a later year. If you withdraw from the extension course, the marks from the 2-unit course that you have already completed will be available for inclusion in the calculation of your ATAR.
However, an extension course generally cannot contribute to the ATAR if the corresponding 2-unit course has not been satisfactorily completed. The unit value of the courses always stays the same regardless of whether you complete the courses in one year or over two or more years.
The two or three courses are available for inclusion in the calculation of the ATAR. Up to 4 units of calculus-based maths can be included in the ATAR calculation. Mathematics Extension 1 has a different weighting in terms of units depending on whether it is paired with Mathematics Advanced or Mathematics Extension 2.
If you study Mathematics Extension 2 2 units , then Mathematics Extension 1 accounts for 2 units. This is calculated by doubling the mark received for the 1-unit course. You can complete Extension 1 and Extension 2 without completing Mathematics Advanced but you must complete Mathematics Extension 1 to count Mathematics Extension 2.
If you do complete Mathematics Advanced then go on to satisfactorily complete Mathematics Extension 1 and Mathematics Extension 2, your results in Mathematics Advanced will not be included in the ATAR calculation, even if you have excelled in it.
The Aggregate Scores for all students who have met the requirements are listed in order from highest to lowest. If you are applying to interstate universities, state admission centres will use the ATAR for entry to their universities. This means that interstate applicants will be able to directly compare their ranks with university entrance cut-offs irrespective of their state of origin.
How is the ATAR reported? Step 2: Scaling So that scores from different scaling groups and colleges can be compared the course scores need to be placed on a common scale. Step 3: Using scaled scores to produce an Aggregate Score Once course scores are scaled, they can be added to form an Aggregate Score.
Briefly, the stages in the process are: For each student, a measure of General Achievement GA is calculated by adding 0. The course scores from the best 3 T majors and the next best T course score — either major or minor — are used. HSC marks provide information about how well you have performed in each of the courses you have completed.
Your ATAR is a number between 0. The student obtained an ATAR of This means this student performed better than The ATAR allows universities to rank students for selection into their courses. Students study different combinations of HSC subjects. These HSC courses must include at least:. The scaling process is carried out afresh each year, and all students who complete at least one ATAR course in a given year are included in the scaling process for that year.
Students who are accumulating courses towards their HSC have their scaled mark for each course calculated in the year that each course is completed. Scaling first modifies the mean, the standard deviation SD and the maximum mark in each course.
Adjustments are then made to the marks of individual students to produce scaled marks. Although scaled marks are generally different from the raw marks from which they are derived, the ranking of students within a course is not changed.
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