From an in-universe perspective, do you think that if Luke could go back to the founding of the Jedi Academy, that he would abandon the concept of classes of Jedi? Obviously as more Jedi were promoted, Luke went back to Master-Apprentice type training (OOU the prequels are to blame), but with hindsight, would Luke have been better off training one apprentice at a time, even if it meant a slower rebuilding of the order? On the one hand, within Luke's first class, three of its members fell to the dark side: Brakiss, Kyp, and Gantoris, which can perhaps be tied into Luke's inability to give enough personal attention to each student. Additionally, post-founding of the Academy, Luke had birthed three genocidal maniacs (Dal Konur, Kyp, and Kueller) and two major Imperial threats to the New Republic (Desann and Brakiss). On the other hand, the quick rebuilding of the Jedi Order was a major factor in defeating the Yuuzhan Vong and perhaps indirectly establishing legitimacy in the New Republic government. From the most recent Insider fiction, Hammer, we can perhaps see why classes were a bad idea for the OJO. The members of the Agri-Corps and other Jedi dropout organizations that we've seen, including Obi-Wan Kenobi, are very resentful of not being chosen, opening themselves up to the dark side. Is one-on-one personal attention a necessity in training Jedi?