Over the recent challenging months, the young people of Christchurch have proven the value of seeking out youth voices, particularly relevant during the United Nations International Year of Youth.

UNESCO: Christchurch Youth Voices Challenge

There have been voices sceptical about the value of Pisa test comparisons and how they are used.

BBC: Schools can measure themselves against Pisa tests

We value deeply the ability to bring so many important voices together, so many diverse opinions, in search of a common goal.

WHITEHOUSE: VP Biden Welcomes Nuclear Summit Participants