next update is around the corner, if you're playing on mobile it'll be on the 16th with the public build
family (Leslie, Ashley, Cassie, Brandy) get small jumps every other update, and focus girls get an entire update to themselves (except for Leslie, she's in every update) to complete their stories. So far we've only had Sabrina and a few commission girls (Candy, Dolly, Angelina) be completed, and like I said this next one completes Brenda. In short, yes, right now the rest of the school staff don't have content.