My school is encouraging participation in Destination ImagiNation , http://www.idodi.org/ . Has anyone participated in this?

"Destination ImagiNation, Inc. is an extraordinary non-profit organization that provides educational programs for students to learn and experience creativity, teamwork and problem solving. Every year, we reach 125,000 students across the U.S. and in more than 30 countries. Destination ImagiNation, our core program, is an educational program in which student teams solve open-ended Challenges and present their solutions at Tournaments. Teams are tested to think on their feet, work together and devise original solutions that satisfy the requirements of the Challenges. Participants gain more than just basic knowledge and skills—they learn to unleash their imaginations and take unique approaches to problem solving."