This is the just released info from the SSU.https://www.det.nsw.edu.au/media/downloads/about-us/statistics-and-research/key-statistics-and-reports/selectivehs.pdf
The scores are from 2014 Selective School Test for entry to year 7 in 2015. It is so surprising to see how the cutoff for Baulkham Hills jumped, James Ruse dropped and Sydney Girls jumped. Other schools are pretty the same like previous 3 years.
One must understand that the very best students do win scholarships and move to top private schools so James Ruse may be lower than Baulkham Hills just because more students turn it down to take scholarships.
One question we can all see is why there are part selective schools with entry scores between 160-175 and most of them are located around Sydney West and NSW regional areas? There is a desperate situation in Australian education where the gap between poor regional areas and large cities. Sydney West is a particularly trouble some problem for the government as schools like Auburn Girls have 98% non-English speaking background with mainly refugees and new migrants. White and established migrant parents move kids to non-Government schools or just leave the area altogether.
Part of the failing government strategy to try to improve the situation is to put 2 selective classes into the most troublesome (academically) schools in Sydney West and South West to try to get good students. As the HSC performance of these schools keep falling, even the top students in their selective classes fail to match with the average students in a normal school at a "better" suburb.
One also wonders why the inner city part selective schools have low entry scores. These areas are populated by rich people yet the schools are academically poor. They keep losing enrolment to private schools. The government has done same tricks. They give these schools a couple of selective class and some new buildings and merge them into groups under one management to save money. This seems to work to lure back some strong students. Potentially these schools could recover due to the better financial status of the parents. They are also located in good areas.