From the Raleigh International website :
The Raleigh International global community congratulates Prince William and Catherine Middleton on their engagement. Both Prince William and Catherine are Raleigh alumni - Prince William went out with Raleigh International in 2000 and Catherine in 2001. The couple, like all Raleigh participants, love adventure, are keen on community service and willing to go beyond their comfort zones and be tested. They both worked with young people from different backgrounds on community projects, developing an understanding and shared commitment to making a difference. Prince William raised enough money to support another young person from a disadvantaged background on a Raleigh expedition.
With a focus on personal development Raleigh enables young people to work on genuinely needed and sustainable environmental and community projects whilst at the same time concentrating on enhancing life skills and confidence.