The High School Ethics Bowl is modeled on the Intercollegiate Ethics Bowl (IEB) which has been in existence for 17 years. Depending on the number of teams participating in a region, a pre-determined number of the highest performing teams from each region are invited to the national competition which takes place end of February/beginning of March, in association with the national meeting of the Association for Practical & Professional Ethics.
Web Resources for Intercollegiate Ethics Bowl (IEB)
Information about the IEB can be found on the website for the Association for Practical and Professional Ethics. More information about the IEB as well as a case archive, from which many high school ethics bowl questions are drawn, can be found on the website for the Illinois Institute of Technology.
Additional information can be found in this New York Times article on the Long Island Ethics Bowl.