Workers with training in science, technology, engineering, and mathematics (STEM) are in high demand in the United States and are essential to innovation and economic growth. Apprenticeship is a proven strategy for training workers, but it is underutilized in STEM occupations. This report explores employers' experiences with STEM apprenticeship. STEM apprentices are concentrated in technician occupations that do not require a bachelor's degree. They are better paid and have higher training completion rates than non-STEM apprentices. Nevertheless, employers often struggle with adapting the traditional apprenticeship model to information technology and engineering technology jobs that have do not have a history of using apprenticeship.