ITLS is organized as a global system of Chapters and Training Centres. Today, ITLS has more than 120 Chapters and Training Centres in over 50 countries around the world.
All Chapters and Training Centres must be sponsored or managed by established organizations. Individuals may not apply for Chapter or Training Centre designation.
In the United States, ITLS Chapters are administered and conducted in numerous states, often through the state chapter of ACEP, or in conjunction with a regional or state emergency medical services (EMS) agency. ITLS Chapters may also be managed by hospital or health care systems, pre-hospital agencies, or other EMS-related organizations.