Do you remember these movies?
Thats how I see education reform in Germany:
Rita is like the 'authorities' and Jugendamter - simple and naive, coming into a new situation that is specialised but it is outside of their sphere of common (mis)understanding. The professor is like the repressed home educators who keep on going but the love of life (not the love of their children) is being zapped. In the case of Germany, by the state themselves, through legal actions against them.
Sir, on the other hand is the epitome of what home educators need to do to bring about reform - they need to understand where the social majority are coming from; understand the objections and pitch relevant information in succinct chunks with dignity to break down personal barriers.