Jedi academies were established to train Force-sensitive beings accepted into the Jedi Order in the ways of the Force. Overseen by the Council of First Knowledge, each academy was governed by an advisory Council appointed by their superiors on Coruscant. Mainstreaming the majority of teachings at the Temple, certain practices were permitted to vary from world to world. However, at all sanctioned academies, a group of Jedi Masters would instruct Initiates to the Order in the ways of the Force. The size of the school varied from world to world; some as small as to consist of a single clan of younglings, and as the large as the main academy housed within the Jedi Temple of Coruscant. Many academies had been established during the Old Sith Wars and were located in the Galactic Rim. Some were located on or near Force-wellsprings or places significant to the Order like crystal caves or nexuses of dark side energies that needed constant monitoring. In addition to the traditional academies established by the Order, the Exploration Corps maintained several spacefaring mobile academies such as the Chu'unthor so that roaming the galaxy and exploring new worlds could be achieved while still teaching traditional doctrine.