Castle is an accomplished full-services certification and licensure testing company. We allow your stakeholders to excel in their profession through the development of competency-based testing, training, and high-stakes certification programs.
With an expert team of testing and instructional design professionals, Castle understands what it takes to successfully launch and maintain a quality credentialing program.
Backed by 28 years of experience in the science of psychometrics and training development, we invite you to partner with a trusted team that is dedicated to your success and will deliver a seamless experience for your program.

Castle Learning Center
The Learning Center is a resource for our customers, partners and the industry to gain new insights from leading experts in certification and licensure testing.