This class and the atmosphere in the classroom didn't work well for me. The next day I went to my first observation in chemistry class. There are 30 pupils in the 9th grade and it is a very noisy class. My accompanying teacher warned me before the students entered the chemistry classroom. As soon as the class began, the class teacher and the deputy principal ran into the classroom.
There are 30 pupils in 9.B and it is a very noisy class.