The other additional language is usually chosen to be English. Official political and social termonology tends to be Roman words because three of the four languages are Roman. This means that Swiss German adopts a few Roman words for public life instead of using German ones. Cultural programs are sponsored by the communities, i.e. the Cantons. The federal government has little say in the matter.
People have the chance to enjoy whichever lanugage form they like.
The other thing we can learn from the Swiss is the exchange programs for mutual understanding. This program aims at bridging families of different backgrounds. Usually, children of two families of differenct languages stay in each other's family for one semester or for one summer vocation. This way, they learn each other's lanugage more efficiently and also better understand each other's lifestyle. Usually, their stays at each other's home don't take place at the same time.