Engineering education continues to become more prominent in Colorado high schools, through dedicated classes, integrated into other STEM courses (such as science and math), and/or extracurricular activities. An important topic within engineering is ethics. This includes macroethical issues such as the environmental and societal impacts of engineering and technology. However, engineering ethics education in high schools has not been widely characterized. This research therefore examines if and how ethics are being implemented in high school engineering education, seeking to understand the teacher perspective. This qualitative research was conducted by interviewing 14 high school teachers in Colorado. These teachers represent multiple STEM subjects, school districts, public and private institutions, as well as religious and nonsectarian institutions. The results of this study detailed how most STEM teachers integrate ethics, although they may not recognize this. Furthermore, most teachers believed that this integration to be important in K12 education.</p