The purpose of this study was to develop an instrument to measure high school students’ perspectives on global awareness and attitudes toward social issues. The research questions that guided this study were: Can acceptable validity and reliability estimates be established for an instrument to be developed to measure high schools students' global awareness, and attitudes towards global social issues? And, to estimate a relationship, if any, between certain demographics of high school students’ in the Miami-Dade County and the two dependent variables namely: perception of global awareness and attitudes toward global social issues. An ex post facto research design was used. The key findings of the study were that reliable and valid estimates can be developed for the instrument. A significant additional finding for the study was those attending public schools (as opposed to private schools) had more positive attitudes towards global social issues. The statistics indicated that these students had taken history, economics, and social studies which was a curricula infused with global perspectives.