Question: This is a two part question. Firstly how many students did Luke have before his academy was destroyed by Kylo Ren? Secondly what will happen to the New Republic now its capital is destroyed?
Darth Crucible
7th Nov 2017
Star Wars: The Force Awakens (2015)
Answer: We learn in The Last Jedi that Luke had Ben Solo/Kylo Ren and a dozen other apprentices. Kylo killed 6 of them and took the remaining six as is apprentices, the Knights of Ren.
The knights of Ren are not the six apprentices Kylo takes with him. The knights of Ren are Snoke's followers, dark force users. Kylo joins them and becomes their leader later on.
Answer: Any answer would be conjecture - best just watch the next movie.