Yoda told him to teach what he's learned, which he was doing before Kylo ruined it. Luckily, Rey is strong with the force and found Skywalker, which Snoke warned will cause the new Jedi to rise.

So Luke currently is the last Jedi, if Kylo did call all Luke's other students but will certainly train Rey though it's going to take awhile before she earns the title, just like Luke didn't become a Jedi until halfway through ROTJ when Vader examined his lightsaber and said "your skills are now complete"

I do like how they're exploring the force/force sensitives, like Chirrut in Rogue One but there was no Jedi then for him to receive any kind of training. Rey has one of the most powerful Jedi of all time training her though, she'll be a Jedi eventually I'm sure