AUTHOR=Gardner Kimberly , Glassmeyer David , Worthy Roneisha TITLE=Impacts of STEM Professional Development on Teachers' Knowledge, Self-Efficacy, and Practice JOURNAL=Frontiers in Education VOLUME=Volume 4 - 2019 YEAR=2019 URL=https://www.frontiersin.org/journals/education/articles/10.3389/feduc.2019.00026 DOI=10.3389/feduc.2019.00026 ISSN=2504-284X ABSTRACT=Research frameworks outline key aspects of STEM (science, technology, engineering, mathematics) integration for teachers, but translating this research into productive changes in teachers’ classroom practices remains a challenge, particularly in schools without an emphasis on STEM integration. In this article, we detail how a STEM education descriptive framework was used to design and enact a year-long professional development with eight secondary teachers at non-STEM focused schools in Southeast USA. Using teacher self-efficacy scores on pre- and post-tests, self-reported STEM integration efforts, and other feedback, we saw productive changes in teachers’ classroom practices and self-efficacy. We conclude with how this STEM education descriptive framework can be helpful in designing effective professional development for teachers at non-STEM focused schools.