Under the "Childrens Courts Act of 1907" (assented 19 November 1907), all Courts of Petty Sessions were constituted as Childrens Courts where a person under 17 years was brought before the court. With the transfer of jurisdiction from Courts of Petty Sessions to Magistrates Courts in 1965, Magistrates Courts were then similarly constituted as Childrens Courts for hearing cases of persons under 17 years. The introduction of the "Childrens Services Act 1965", provided for operation of Childrens Courts, formerly constituted under the Childrens Courts Act. The Childrens Services Act was administered by the Department of Childrens Services and subsequent agencies. Following the "The Childrens Court Act 1992" now being adhered to in Queensland the Magistrates Court deals with matters in this special court known as Childrens Court.
Childrens Courts were empowered to hear charges against children, examine witnesses, and if necessary convict or admonish, commit for trial elsewhere and order damages or costs.
Childrens Courts established at Magistrates Courts deal with simple criminal offences.
Under the "Childrens Court Act 1992" the Governor in Council may, on the recommendation of the Attorney-General, appoint 1 or more magistrates as Childrens Court magistrates. The appointment of a person as a Childrens Court magistrate does not affect the person's appointment as a magistrate or powers as a magistrate. For the purpose of the Magistrates Act 1991, the duties of a magistrate include those performed as a Childrens Court magistrate. The Childrens Court magistrate may resign by written resignation to the Attorney-General, however the resignation does not affect the appointment or powers of the magistrate as a magistrate. The Governer in Council may, on the recommendation of the Attorney-General, appoint a magistrate to act in the office of a Childrens Court magistrate if, in the Governor in Council's opinion, the business of the Court requires it. The "Childrens Court Act 1992" created a two tier system of juvenile justice with the establishment of the Childrens Court of Queensland which is a special form of District Court that deals with juveniles who commit serious criminal offences.