Just finished watching 'Entre les murs' , a French movie from 2008 also known as 'The Class'.
It was completely different from other movies in this genre, you know, problem children in a class room, teacher trying to win their trust and help them get better grades at school, etc. Here we only see teachers and children at school, it is filmed in a way that looks like a documentary, yet it is a movie. We hear different viewpoints from teachers and parents about how to treat students and we hear opinions from students about what happens at school.
Sometimes the teachers are correct, sometimes the students are correct. The movie doesn't really say 'this is good and this is bad', it just shows what's going on in a compelling manner, tries to create an understanding of the various teacher-student-parent situations and leaves it to the viewers to draw their own conclusions.
After it finished I realised I didn't even notice a soundtrack, there probably was one, it just didn't really aim to create the mood of the film which enhanced the documentary style quality. I was about to do some chores at home while playing this movie (I recorded it a while ago from a Dutch tv channel until I would have the time and mood for it), but it was so interesting that I ended up just watching it without doing my chores.