caption: The image shows a group of men sitting at desks in front of a blackboard in a classroom. The desks are arranged in a semi-circle around the room, with books, papers, and other objects on the tables. There is a person standing in the center of the room holding a board, and a cupboard to the right of the desks. The walls are visible in the background, and there are lights at the top of the image. The image is in black and white.