Reformed theology is a tradition within Protestant Christianity that traces its roots to the 16th-century Reformation — particularly to John Calvin — and is characterised by a strong emphasis on the sovereignty of God, the total authority of Scripture, and salvation by grace alone through faith alone in Christ alone. In Australia, the Sydney Anglican diocese is one of the most explicitly Reformed Anglican contexts in the world, with a strong commitment to the Five Solas and expository preaching.
Many SRE volunteers in NSW are connected to Sydney Anglican or broadly evangelical churches and are therefore operating within a Reformed framework — whether or not they use that vocabulary. Understanding what that framework actually teaches can dramatically sharpen how you teach.