Yes, 'The Wave' is based on a true story. It's inspired by a real - life experiment that took place in a high school in California in the 1960s. The experiment was designed to show how easily people could be influenced and how quickly a group could turn into a sort of authoritarian regime within a short time, just like in Nazi Germany. This film does a great job of bringing that concept to the big screen and making viewers think about the power of group dynamics and the importance of individual thinking.
In the true story, a teacher in a high school in California in the 1960s wanted to teach his students about the rise of Nazism. So, he started an experiment. He created a group within the class called 'The Wave'. The group had strict rules, a salute, and a sense of unity. As time passed, the students became very involved and began to exclude those who were not part of 'The Wave'. It got out of hand, showing how quickly a seemingly innocent group can turn into something more authoritarian and controlling.
There are also some prominent students in the film. For instance, there is a student who at first is quite skeptical about the 'Wave' but gradually gets drawn into it. And there is another student who is more resistant throughout the process. These characters help to show different reactions to the emerging group ideology.
In 'The Wave' film based on a true story, one key event is the teacher's experiment in the classroom to show how easily a group can conform to a collective ideology. He starts simple rules which gradually lead to a more extreme sense of unity and obedience within the group.
The Wave is mainly fictional. It might draw inspiration from some real-life concepts or situations, but it's not directly based on a specific true event or story.
To be honest, I don't have definite information. Sometimes stories have elements of truth mixed with imagination. You might need to research more about the background of 'Wave' to know for sure.