The 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; the smallest consisted of a single clan of younglings, and the largest was the main academy housed within the Jedi Temple of Coruscant. Most 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.