Why do we pay attention in history class? Actually, let's rephrase that: why should we pay attention in history class? Well, The Wave argues that the study of the past can help us build a better future, by learning from our mistakes. This novel certainly can't be used as a history book, but it can be used as a jumping off point toward further study about the Holocaust and World War II. It encourages us to learn more about this period in history by (a) showing us how relevant it is to our lives, and (b) raising some burning questions that just make us crave more knowledge. Mmm, knowledge.
The Wave clearly shows us how studying the past can help us understand the present. History is everywhere.
If the author really wanted to prove a point about learning from past mistakes, he should have told us what happened to everyone after The Wave broke up. How are we supposed to know that anything is different now?