A newly developed Excel tool, teen-SPARC, is designed to help public health jurisdictions and other entities explore the potential short-term impact of behavior change on reducing sexually transmitted infections (Neisseria gonorrhea, Chlamydia trachomatis, and HIV) among the sexually active high-school-attending adolescent population. The tool integrates data from the Youth Risk Behavior Surveillance System (YRBS) and can also be useful to jurisdictions who do not have local YRBS data, and who either have alternative data sources or who wish to explore what-if scenarios. This tool can be accessed atwww.emorycamp.org/teensparc.