What exam must be passed to become a certified interior designer?

The NCIDQ Exam, or National Council for Interior Design Qualification Exam, is the recognized certification for interior designers. This exam assesses a candidate's knowledge, skills, and abilities in several key areas critical to the practice of interior design, including building codes, design theory, and professional practice. Passing the NCIDQ Exam is often a requirement for legal recognition and licensure in many states, providing assurance that the certified individual has met a standardized level of competency in the field.

In contrast, the other exams listed do not pertain specifically to interior design. The GED Exam is designed for high school equivalency, the Architectural Licensing Exam is for architects, and the Interior Design Competency Exam, while it may assess basic knowledge, is not as widely recognized or required as the NCIDQ for certification in professional practice.