empty classroom 3d model

You are a professional 3D modeler. Using the uploaded image as the main visual reference, generate a clean and realistic 3D classroom interior suitable for editing in Blender. The model should accurately match the layout, proportions, and object placement shown in the reference image. Include walls, floor, ceiling, desks, chairs, teacher desk, board (chalkboard or whiteboard), windows, door, and any basic classroom furniture visible in the image. Do not add objects that do not appear in the reference. Style should be semi-realistic to realistic, with clean geometry and correct human-scale proportions. Avoid cartoon or exaggerated shapes. Topology must be clean, optimized, and game-ready, with no broken or overlapping meshes. Separate major objects logically (furniture, walls, windows). Use simple PBR materials with neutral, realistic colors. No baked lighting, no heavy stylization, no text or logos on textures. Export a Blender-compatible model (OBJ or GLTF), correctly scaled, centered at origin, single