By the fall of the Galactic Republic in 19 BBY, many of the ancient academies had been shut down for decades, with the Council of First Knowledge preferring the central teachings of the Coruscant Temple. After the dissolution of the Order during the Great Jedi Purge, all orthodox Temples and academies were routed and burned in order to prevent any more Jedi from learning the secrets of the Force. However, the Galactic Empire's chokehold on Force-education did not last and the Order was reformed following the conclusion of the Galactic Civil War. After Grand Master Luke Skywalker's New Order became a single class of twelve students including his nephew Ben Solo, it was reduced to only himself when his nephew turned to the darkside and became Kylo Ren.