>>5919475Being an on-the-fly sort of sporadic effort, you can naturally expect more when it comes to a more significant and planned caper.
As for the classroom, pretty standard. One door in and out, high windows both into the hallway and for the building exterior, a supply closet, and a teacher workroom at the back with furniture and storage. Being an English classroom, indeed there are things like bookshelves and cabinets around. Various ways you could even reach the ceiling if need be. Apart from the majority of space dominated by desk rows, there's still numerous places you could hide or maneuver about.