Scaling reflects the strength of the candidature in a particular course, by comparing how they do in their other courses. A higher scaling course means that the majority of the candidates attempting that course are more 'academically minded', i.e. they do better, and this would be reflected by their performance in their other subjects. A lower scaling course, however, means that the majority of students attempting that course are not as academically minded, and again, this would be reflected by their performance in their other subjects.
This means that the scaling of a course could change from year to year, depending on how its candidates perform in their other subjects. Scaling should not be confused with aligning.
However, scaling should not be used as a sole factor in choosing courses. The best course of action regarding choosing choices should be to consider the following:
1. The candidate's interest in that subject
2. The candidate's aptitude for that subject
3. Advice from teachers, parents and friends
4. Their school's teaching background in that subject
It is possible to achieve any UAI with any combination of subjects.
Why do we need scaling?
Scaling allows universities to compare students who have studied different courses fairly.
How does scaling work?
Scaling allows for students who have undertaken different courses in the hsc to have their marks compared in the form of a UAI.
Is a courses scaling always the same?
In short no. It depends on the quality of the students each year.