Create a top-down pixel art tile set for an RPG classroom. Include tiles for: Desks and Chairs (top-down view) Blackboard (with optional chalk markings) Teacher's Desk (with details like books) Windows (showing a simple outdoor view) Bookshelves (filled with books) Flooring (wooden or tiled patterns) Walls and Partitions Decorations (educational posters or charts) Use a retro, pixelated style with a cohesive color palette, ensuring tiles are modular for easy assembly.