In its About Sexuality and Sexual Health in NSW Government Schools, the NSW Education Department says:
A primary goal of sexuality education is to equip children and young people with the knowledge, skills and values to have safe, fulfilling and enjoyable relationships and to make responsible and safe choices that promote and protect their own health, safety and wellbeing and that of others.
Being able to communicate, listen and negotiate with others and to make informed decisions are useful life-skills that can be applied to all relationships, including intimate relationships.
The Department’s suggested resources are here and support materials here. It provides guidelines for using external providers and says:
Teachers and executive need to play a central role for programs and approaches to be sustainable and embedded within the school. Teachers are best placed to deliver programs that promote health, safety and wellbeing.