The Wave (aka Die Welle) is about "A high school teacher's unusual experiment to demonstrate to his students what life is like under a dictatorship which spins out of control."
I enjoyed the movie even though the plot is predictable. You can read more here:
Die Welle (2008)
As for Night Train... I am quite sure this movie is a remake? Anyway, this is a low budget thriller/suspense movie starring Danny Glover. A passenger on the train dies, and when it is discovered that the dead passenger is carrying something that is worth a lot of money, the other train passengers decide what to do with the body, how to split the money, etc...
There is nothing really special about Night Train, but it is still entertaining to watch. More info here:
Night Train (2009/I)