Approved by the American Psychological Association (APA), these guidelines are designed to help high school psychology teachers make decisions relating to ethical problems in their classrooms. The guidelines cover three areas: the use of animals in school science behavior projects, the use of human participants in research or demonstrations conducted by high school students, and ethical guidelines for teachers. Respect for animal life, knowledge of humane laws, and proper care and feeding of animals are stressed. Further, the use of invertebrates rather than vertebrates, and observation rather than experimental manipulation should be encouraged. Students are reminded that in order to use human participants, they must be supervised by a qualified school authority, that agreement must be obtained from all participants, that participants should not be exposed to mental or physical risks beyond the ordinary risks of daily life, and that anonymity of information should be preserved. Similar guidelines for teachers consider complex ethical issues resulting from the introduction of sensitive topics in class discussion and the questioning of personal and social values. The teacher's responsibility in the areas of personal and professional behavior and their obligations to students are emphasized. (KC)