HRI has had many clients and collaborators from diverse sectors, such as:

Non-Profits/Foundations:

• ASSET Inc.
• Boston Museum of Science
• Burroughs Welcome Fund
• Knowles Science Teaching Foundation
• Math for America
• Merck Institute for Science Education

Professional Organizations:

• American Association for the Advancement of Science
• American Geological Institute
• Association of State Supervisors of Mathematics
• Council of Chief State School Officers
• Council of State Science Supervisors
• National Council of Teachers of Mathematics
• National Science Teachers Association

Research and Development Organizations:

• Abt Associates, Inc.
• Education Development Center
• National Center for Improving Science Education
• RTI International
• TERC
• WestEd
• Westat, Inc.
• Wisconsin Center for Education Research

Universities:

• Harvard University
• Michigan State University
• North Carolina State University
• The Ohio State University
• University of Florida
• University of North Carolina at Chapel Hill
• University of Pennsylvania
• Virginia Commonwealth University
• Western Washington University