Vernon's Texas Rules Annotated - VTRA TX R STAND ATTY CERT PT I § VII. Examination

A. Passing of an Examination. A certification applicant must pass a written examination applied uniformly to all certification applicants to demonstrate sufficient knowledge, proficiency, and expertise in the specialty area to justify the representation of special competence to the legal profession and to the public.

B. Failure of an Examination. After a certification applicant has taken and failed an examination 3 times in a specialty area, the applicant is ineligible to apply for the next 3 years' examination in that specialty area.