Our nation needs to increase the number of students pursuing degrees in the ﬁelds of Science, Technology, Engineering, and Mathematics (STEM) and those leading to transportation-related careers. In order to meet the demand for qualiﬁed graduates in transportation, it is necessary to diversify the pool of students entering college with an interest in these ﬁelds. The National Summer Transportation Institute (NSTI) is an educational initiative developed by the Federal Highway Administration (FHWA) and Department of Transportation (DOT). The NSTI at City Tech was designed to increase awareness of transportation-related careers among New York City high school students. The structure of City Tech’s NSTI includes lectures, ﬁeld trips, projects, and laboratory activities that promote the growth of each participant and strengthen their academic and social skills. This NSTI program provides a model for broadening participation in STEM and building America's STEM workforce.