This study used a systemic perspective to examine a five-component experiential process of perceptual and developmental growth, and transfer-to-teaching. Nineteen secondary math and science teachers participated in a year-long, engineering immersion and support experience, with university faculty mentors. Teachers identified critical shifts in perceptions of engineering, and recognized appropriateness of engineering as a career option for their students. They transferred content learning and perceptions to students, through experiential narratives and instructional activities. Teachers reported that their secondary math and science students demonstrated observable change in knowledge, skill and beliefs about engineering, subject area score and skill improvement, class engagement, and engineering-related career aspirations.