Since 1979 PS International has provided needs assessments, strategic planning and program evaluation services to a wide range of clients which include:
· American Chemical Society
· American Academy for the Advancement of Science
· Maryland State Department of Education
· Montgomery County Public Schools
· National Institute on Aging
· National Institutes of Health
· National Science Foundation
· Pfizer, Inc
· Prince Georges Public Schools
· University of Hawaii, Manoa
· University of Illinois
· University of Nebraska
· University of Wisconsin
· US Army
· Veterans Administration