PEN15 plans to stay in 7th grade should it be renewed for Season 2

The Hollywood Reporter

"Before we even pitched the show, we had set up arcs for the characters because as of now the goal is that they stay in seventh grade forever," says co-creator/co-star Maya Erskine." In that case you're like, 'Oh well then how do the characters grow?' So we tried to establish that early on, in the first season, they're a bit more innocent and playing with more childhood versus teenagers. Then in the second season maybe they experiment more with drugs or we go through things that happened to us later on in middle school and then high school and just place that in the frame of seventh grade."