GBSN GBSN's 71 world-class business schools span 35 countries on 6 continents. They are network members and are contributing expertise to GBSN programmes. Since 2003, GBSN has been a leader in promoting management education as a critical component in successful international development strategies. GBSN is fostering a network of emerging business leaders who are committed to using the power of business to create a better world. The next generation of skilled managers will have a positive impact on society throughout their professional careers and beyond.