This document describes the development of web-based GIS career awareness modules for high school students. It was presented at the 2007 ESRI Education User Conference. The modules were developed with funding from the NSF to provide online learning about GIS concepts and careers. There are four modules that cover digital maps, GIS applications, emerging areas of GIS, and a career essay. The modules do not require software installation and allow students to access maps and lessons anywhere using a web browser. The goal is to help students learn about and assess their interest in GIS-related careers.