I'm trying to get my girlfriend into playing FFXIV, and I think I was finally successful in convincing her to give it a try.

I was planning on picking up a class I haven't leveled yet (probably BLM, NIN, or WHM), but I faintly recalled hearing somewhere that going through the story in NG+ didn't actually give quest experience; it's just a way to replay the quests.

If this is the case, how feasible is it to level a new job alongside a new player, as a character who has already been through the entire story?

I know that you get no EXP if there's someone in your party that is too high level, but..