Selective School (New South Wales) - How The Profile Score Is Calculated

How The Profile Score Is Calculated

In general, entry into a government selective school is determined by a profile score, which is derived by combining school marks in English and mathematics with the marks received in the Selective High Schools Test in reading, writing, mathematics and general ability.

The profile score is computed simply by adding the English, mathematics and general ability component scores which are marks out of 100 to form the profile score out of 300.

The component scores are computed as follows:

• In general ability the test marks are scaled on a statewide basis to a mean of 60 and a standard deviation of 12 to form the component general ability score out of 100.
• In mathematics the test marks are likewise scaled on a statewide basis to a mean of 60 and a standard deviation of 12 to form the scaled mathematics test marks out of 100. However, in mathematics the process of determining the component score is slightly more complex because in mathematics there is a school mark to consider in addition to the test mark. To include the school mark the next step of the process is to calculate the mean and standard deviation of the scaled mathematics test marks for each school. Then, school at a time, the mathematics school marks for each student are moderated (or scaled) to the same mean and standard deviation as the scaled test marks for students for that school. The scores formed from this process are called the moderated school marks and are also out of 100. The reason for scaling the school marks and test marks to the same mean and standard deviation is to ensure that both school and test marks have the same value in the final component score. Next, the scaled test marks and moderated school marks for each student are averaged and then re-scaled on a statewide basis to the mean of 60 and standard deviation of 12 to form the final component score out of 100. The reason for scaling all component scores to the same mean and standard deviation is to ensure that each component is given an equal value in the profile score. If this were not to occur then the component with the highest standard deviation would have the greatest value.
• In English this process is even more complex because there are two test marks (reading and writing) and only one school mark (English). However, the school mark contains both reading and writing components so the process is fair and valid. Put briefly, the procedure described above for mathematics is repeated twice in English. The school English mark is moderated first for reading and then again for writing. The resultant scores for reading are then given a weighting of two thirds and the resultant scores for writing are given a weighting of one third. These two scores are then added and re-scaled on a statewide basis to a mean of 60 and a standard deviation of 12 to form the final component score in English out of 100.

Scaling and moderating school and tests marks ensure that
• school and test marks have the same value;
• school marks from each school are placed on the same scale as the test marks achieved by students from those same schools thereby making it possible to fairly compare school marks from one school with school marks from each other school;
• each component (English, mathematics and general ability) has the same value.

The process also includes 'wild-score' processing which identifies students who, based on their school performance, may have done much worse than expected in the test. Where such students have been identified the moderating process takes this into account and adjusts scores accordingly. This ensures that students will not be disadvantaged by other students who attend the same school and who may have been done much worse than expected because of serious illness, misadventure or other cause.

By early July students receive letters informing them of one of three outcomes concerning their application to each school:

• offer- the student can apply immediately for enrolment in the certain school.
• reserve list- the student is placed on a waiting list, with the possibility of entry if their place on the list is reached
• unsuccessful- the student is not being considered for a place

In some cases, an application can be put on 'hold', meaning it is awaiting the result of further enquiries by the Department of Education.

Other criteria include age and grade, and current residency status in Australia. This usually requires students to be between 11 years and 5 months and 13 years at the start of the year they wish to commence Year 7, be in Year 6 the year before they wish to enter, and be either a citizen or permanent resident of Australia or a citizen of New Zealand. However, exemptions to some of these requirements may be given in special circumstances or through consultation with the Department of Education.