Dylan Wiliam, Emeritus Professor of Educational Assessment, Institute of Education, University of London discusses the importance of teacher quality across all nations and types of government.

The Salzburg Global Seminar brought together 63 participants from 24 countries, in order to take a closer look at what needs to be done in order to ensure that quality education is available for all.

The conference was entitled, "Optimizing Talent: Closing Educational and Social Mobility Gaps Worldwide" at the Salzburg Global Seminar (Dec. 2011)