I don't see what season 3 could even be about
They wrapped up Hannah's story, they wrapped up Bryce's story with him leaving and getting away with it, Justin's got a family finally and is happy, Jessica has moved on and is happy. Everything is wrapped up for everyone really, i mean can they really make a whole season out of Tyler's attempted school shooting?
Season 3 would be a bit more interesting had Tyler actually gunned down some students and shot Clay leaving him either dead or injured, leave the season off with Tyler shooting half the school up, then open season 3 with the fallout from it with Tyler on the run. Since Clay stopped Tyler and left with him how's that really intrigue anyone to watch season 3? It was kind of a lame cliffhanger cause nothing really happened.
And the longer the show goes the more the title wont make sense anymore, since the title of the show is about Hannah's suicide and its looking like the show is gonna continue and become about new stories.