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One summer many years ago I spent two months running a camp counselor training program in northern California.During the regular school year,I directed a residential environmental education program for sixth graders.Elementary school kids stayed with us for five days to study the ecology of the redwoods,the Pacific coast,and the golden hills of California.My staff of thirteen college interns and recent college graduates did the actual teaching,but every week a different group of high school juniors and seniors skipped a