He taught composition and ESL at numerous post-secondary institutions, including City College of New York, New York City College of Technology and St. John's University. As the chief academic officer for English Language Arts at Unbounded, he directs the ELA curriculum work and creates professional development programs for the Standards Institute. Previously, David was a fellow for ELA curriculum and assessment at the Regents Research Fund, where he led the development of P-12 ELA curriculum on EngageNY.org. David also previously held senior roles at the New York City Department of Education