Mapping data allows easy visualization of occurrence of and trends in health events. Interventions for adolescent sexual health outcomes such as sexually transmitted infections (STIs) and teen births have rarely been evaluated using GIS. Geocoded data and maps from a program in Texas County school districts will be shown as examples. The maps show chlamydia cases and teen births and rates in the program school districts. These maps will be used to compare sexual health outcomes geographically (between County school districts) as well temporally (years).