Hello, I'm going to try describing the picture attached. 

We can see on the picture a lot of people. They are probably in a classroom. We can begin by identifying the teacher. I think that the teacher is the lady wearing glasses and whose hair is orange. She wears a green jacket and she has a book in her hands. A student is touching the sun. This student has red hair and she wears a red jacket. The student on her right read a paper. This paper is maybe the instructions of the experiment. He seems very interested by the document. All students are focused on the solar system in the center of the picture. In the room, there are several bags. These bags belong to the students. The classroom is probably dedicated to scientific courses. Indeed there are many devices and scientific instruments. On the well there is a kind of chemical picture. Another clue about the scientific classroom is the ghost. I think that it is Newton but I am not sure. In the upper-left corner, the plants are probably used during the biological lesson.

Thank you very much for your advice, correction and time :D

Have a nice day.

Arnaud :)