The chairs in most rooms are awful, they are far too uncomfortable. It's really distracting too, constantly having to move around on the seat when your butt hurts too much. Some rooms do have cushioned seats but they're not much better. More comfortable seats would cause less distraction in lectures and would thus likely improve results.
This Idea is open for voting 09—23 Oct 2019. We'll score this Idea once voting ends, and provide updates shortly after.