State governments are increasingly passing legislation requiring schools to provide critical incident mapping (CIM) to aid first responders and computer-aided dispatch professionals. In some cases, the state legislation applies only to K-12 school districts and others include higher education institutions. Regardless, GIS technology is being underutilized to support school risk and emergency managers with these tools. This presentation will show how Langan is working with schools to provide campus, facility, and indoor GIS mapping capabilities in support of CIM as well as related planning, mitigation, and response tools. Focused topics to be covered include incident data sharing and collaboration, indoor mapping, life safety and security asset mapping, routing and wayfinding, 3D GIS, best path analysis, and evacuation planning using the latest ArcGIS technologies as well as integrations with a wide variety of school systems and data sources.