David Steinberg serves as the Assistant Superintendent for Secondary Curriculum, Instruction, and Assessment at Syosset Central School District. In this role, he leads the development and implementation of academic programs that align with state standards and foster instructional excellence across the district. Steinberg's leadership is integral to advancing Syosset's mission of preparing students to thrive in an evolving future.​ Beyond his role in Syosset, Steinberg has demonstrated a strong commitment to educational governance, serving as a trustee and past president of the Harborfields Central School District Board of Education. His combined experience in district leadership and board governance reflects a deep dedication to advancing public education across Long Island.