Leonie Haimson
Executive Director


  • Achievement gap
  • Blended learning
  • Charter schools
  • Class size and structure
  • Common Core assessments
  • Facilities
  • Online learning
  • Parent involvement
  • Personalized learning

Leonie Haimson is the executive director of Class Size Matters, a nonprofit organization that advocates for smaller classes in New York City public schools and the nation as a whole and also focuses on expanding parent decision-making in the area of education policy, including protecting their children’s privacy and personal data. She received the John Dewey Award from the United Federation of Teachers in 2007; was named one of New York City’s “family heroes” by New York Family magazine in 2009; was called an “extraordinary advocate for our children” by Advocates for Justice in 2012; and received the Parent Voice Award from Parents Across America in 2014. In 2015, she was named one of the 10 most influential people in education technology for her work in student privacy by Tech and Learning Magazine and has also been called the “city’s leading proponent of smaller classes” by The New York Times. She has appeared on a variety of TV and radio shows and has written for many news outlets. She was a co-founder of Parents Across America, is a board member of the Network for Public Education, and co-founder and co-chair of the Parent Coalition for Student Privacy.