When highly visible lapses in ethics occur, education gets some of the blame. Principals in the U.S. subprime mortgage crisis and the Enron scandal had been educated at Harvard and other elite business schools, where professional and moral ideals had arguably been replaced by a focus on profits at the expense of ethics. A long-standing tradition in ethics education, however, holds that by college or graduate school it is "too late" to teach ethics. A natural question arises: Can we teach ethics earlier, possibly at the high school level? This article reports on a curricular effort titled "Teaching the Ethical Foundations of Economics by the National Council on Economic Education" (NCEE) with just that goal. After several years of development and assessment, materials for teaching ethics in social studies classrooms have been prepared and tested. The early results suggest that high school students can successfully be taught about ethical issues in economics and other social studies classes. (Contains 1 table and 4 notes.)