Prepare to be surprised.
In the opening moments of the film, Guggenheim freely admits that he betrays his liberal beliefs every day when he drives past three public schools on his way to drop off his children at their private school. His children's education is so important, he's unwilling to risk their future success on the abysmal education record of government schools. It’s a refreshingly honest admission and the rest of the film follows suit.
"Waiting for Superman" is an objective assessment of the deplorable state of modern American education and the culprits behind it. Both sides of the political spectrum can agree with the assessment; fingering culprits is the source of the political divide.
Amazingly, Guggenheim lays most of the blame at the doorstep of the teachers unions. He even mentions that they are among the largest political donors in the country and the recipients of over 90 percent of their political donations are Democrats.
The most compelling aspect of the film is not that it unmasks teachers unions, rather it's the heart-wrenching stories of the five young students whose stories are interwoven throughout the film's exploration of the school system. Personalizing the statistics thrown around in the political debate makes it much harder for those opposed to change to make any emotional appeal.