The Tournament, which took place in Belfast, Northern Ireland from 4–21 April, was split into two divisions of twelve teams.

The IRB decided to fold its under-19 and under-21 world championships into a two-tiered under-20 tournament structure starting in 2008.

(The first woman ever to officiate at any IRB tournament outside the Women's Rugby World Cup was American Dana Teagarden, who was referee for six matches at the 2007 USA Sevens, an event in the IRB Sevens World Series held in February 2007.)

However, with the creation of the IRB Junior World Championship, both teams competed in its inaugural edition in 2008.

# Zimbabwe, Chile, Romania, Russia, Chinese Taipei and the Cook Islands were initially relegated from Division B and had to enter regional competitions to qualify for future World Championships.