Room 9
From BRGS Wiki
Room 9 is on the balcony in the left hand corner above the stage. Chances are, if you don't do Physics at A-level or go to Eco-Schools meetings, then you probably won't have been in here or even seen it. Its hidden in the corner next to Ms Dougherty's office.
This room used to contain three 'comfy stools', much fought over and treasured. Now, only one remains, and the contest for said stool is so vicious that Channel 5 is investigating the television rights.