Four Corners takes you inside the suburban schools connected to the secretive Opus Dei.
Reporter Louise Milligan and the team investigate the disturbing practices of the conservative Catholic organisation and its influence in the NSW Liberal Party.
Milligan reveals in some cases the schools are not following state curriculum and are accused of persistent attempts to recruit teenagers to Opus Dei and have taught misinformation about sexual health, including discouraging girls from getting the HPV cervical cancer vaccine.
Through intimate personal testimonies, former students of the elite schools reflect on the practices they say has scarred them for life, going as far as to call the schools "hell on earth".
Purity: An Education in Opus Dei, reported by Louise Milligan goes to air on Monday 30th January at 8.30pm. It is replayed on Tuesday 31st January at 11.30pm and Wednesday 2nd February at 10am on ABC TV. It can also be seen on ABC NEWS channel on Tuesday at 9:15pm AEDT and Saturday at 8.10pm AEDT, or anytime on ABC iview and at abc.net.au/4corners.