sentences:  The American Friends, a non-profit organization founded in 1952, unites alumni and friends of the Collège from all of the phases of the school's history.It contributed to the school by organizing an annual fundraising drive among the school's US alumni and by continuing the tradition of the summer work camps that went back to the school's earliest years.The work camps were three-week summer sessions organized for high school and college-age students who experienced the atmosphere of Chambon and the Collège during the very pleasant summer season in the mountains, worked at community service projects and basic maintenance or repair tasks at the school, and improved their French-language skills.