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STEMteachersNYC For teachers by teachers about teaching. Learn more about our workshops About US STEMteachersNYC is a nonprofit organization dedicated to supporting a community of STEM teachers across the NYC region. Our mission is to cultivate excellence in STEM teaching and to promote deep understanding and success for students through innovative teacherled professional development. Our weekend workshops are offered during the school year and multiweek workshop intensives occur in the summer led by master teachers.