David Seinfeld is a seasoned educational leader with over four decades of experience in school administration, curriculum development, and instructional leadership in New York City and on Long Island. He holds a Specialist Diploma in School Supervision and Administration, a Master’s in Secondary Education/Mathematics, and a bachelor’s in mathematics.

The first half of David’s career was spent in two Queens high schools, as a math teacher and assistant principal at Martin Van Buren High School and as Principal of Robert F. Kennedy High School in Flushing.  From 2003 to 2014, David was Principal of Calhoun High School in Merrick, where he spearheaded innovative instructional programs and expanded college-accredited course offerings. He later served as Assistant Superintendent for Curriculum, Instruction, and Assessment in the Bellmore-Merrick Central High School District, leading district-wide initiatives in professional development, technology integration, and curriculum design.

David’s commitment to education extends beyond school walls. He has held leadership roles on the boards of Community Mainstreaming Associates, FIRST Robotics LI, and Virtual Enterprise International. He has been a trustee of the Roslyn School Board of Education since 2006 and has contributed to professional organizations such as the National Association of Secondary School Principals, LIASCD and the Nassau Counselors Association. His accolades include induction into the Calhoun High School Hall of Fame and recognition as District Administrator of the Year by the Long Island Foreign Language Supervisors.

In addition to his professional career and his board work in education, David and his wife, Dr. Laura Seinfeld, the retired superintendent of the Oyster Bay-East Norwich School District and the current Dean of the College of Education, Information and Technology at LIU Post have two grown sons, both of whom are married.  All four of their “children” are in the family business of education! Most importantly, David is the proud grandfather of Hayden and Willow, both who seemingly have little choice but to become teachers.