Brisbane Grammar School (BGS) is an independent, non-denominational, day and boarding school for boys, located in Spring Hill, an inner suburb of Brisbane, Queensland, Australia. It is the oldest secondary boys school in Brisbane. Some of the Brisbane Grammar School Buildings are listed on the Queensland Heritage Register. Established in 1868 under the Grammar Schools Act that was passed by the Government of Queensland in 1860, the school has a non-selective enrolment policy and currently caters for approximately 1500 students from Years 5 to 12, including around 100 boarders.