The Question and Answer section for The Wave is a great resource to ask questions, find answers, and discuss the novel.
The characters learn about the dangers of mass conformity and "group think". They see the dangers of not being critical and thinking for themselves. They learn how Germans fell prey to fascist ideology during WW2.
I'm sorry, your question requires additional detail. The positives and negatives of Mr. Ross' experiment? The students? Chapter? Also, the title of the novel listed in this category is The Wave, are you referring to a different text "Waves"?
Generally the film explores the same themes as the book.