Castle Worldwide, a developer of certification and licensure examinations and online training programs, says it has completed more than 100 engagements without a single legal challenge.

“Castle Worldwide has one of the strongest client retention rates in the association services industry because of its high level of customer service and its reputation for legally-defensible examinations,” said James Henderson, senior vice president of Castle and former chair of the National Commission on Certifying Agencies (NCCA). “In fact we have never lost a client.”

The client roster for RTP-based Castle includes professional associations and companies in industries such as healthcare, counseling, engineering, design, and management. In addition, 19 percent of certifying agencies accredited by the NCCA are Castle clients.

Castle’s examinations are administered at more than 400 established test sites throughout the United States and abroad. The firm has administered these examinations in every U.S. state as well as in 40 countries.

Castle Worldwide: