In English, you can describe your classroom like this:

"My classroom is a spacious and bright room filled with desks and chairs. On the walls, there are colorful posters and charts related to various subjects, such as math, language, and science. The blackboard is large and clean, and there is also a whiteboard for more modern teaching methods.

The atmosphere in the classroom is warm and inviting. The teacher and students interact actively and respectfully, creating a positive learning environment. The classroom is a place where we can learn, grow, and develop our skills and knowledge."