Its not necessarily clear from this article but all the NAPLAN data and other studies have shown that (in Australia) the school you attend has almost no influence on any valuable metric including academic success, long term income, self reported happiness etc. The factors that are most strongly predictive are parental income and parental education level.
Unless the public school has syringes in the sandpit save your money.
Nath@aussie.zone 17 hours ago
For Primary school it is less of an issue. What you do at home is more important than which particular school they attend. Read to them every night, have them read to you every night. Do spelling exercises each week. Be careful about what TV you put them in front of (Numberblocks good, Youtube bad) etc.
For High School, we went with the “move to good school catchment” method. It has worked out well for us, but damn is it expensive.