The Arctic Climate Modeling Program (ACMP) offered yearlong science, technology, engineering, and math (STEM) professional development to teachers in rural Alaska. Teacher training focused on introducing youth to workforce technologies used in Arctic research. Due to challenges in making professional development accessible to rural teachers, ACMP modified the traditional ITEST format, instead offering unique “curriculum resource-based professional development” that provided a year-round mix of training options for 165 teachers. Sustainable program resources were created in collaboration with