The NLN has developed ACE.P resources to focus on the increasing impact of environment, housing, and access to care for children in vulnerable populations. The cases and teaching strategies focus on the special needs of vulnerable children in the areas of nutrition/obesity, oral health, preventive care, immunizations, mental health, and autism. The ACE.P unfolding cases follow the format of NLN’s highly regarded and successful Advancing Care Excellence for Vulnerable Populations (ACE) series.