North Sydney Boys High School is a government-funded, single-sex, academically selective secondary day school for boys, located at Crows Nest, on the Lower North Shore of Sydney, New South Wales, Australia. In 2023, North Sydney Boys High School sat as the first ranking high school in the state, based on the percentage of exams sat that achieved a Distinguished Achievers (DA), overtaking the first ranked James Ruse Agricultural High School, sending JRAHS to the second rank for the first time since 1996.

Education in Australia encompasses the sectors of early childhood education (preschool) and primary education, followed by secondary education, and finally tertiary education, which includes higher education and vocational education. Regulation and funding of education is primarily the responsibility of the States and territories; however, the Australian Government also plays a funding role.