The role that educational diagnosticians play in the educational process can vary across settings. In Texas, the Texas Education Agency oversees the State Board of Educator Certification (SBEC). SBEC certification standards outline knowledge and skills that are required for educational diagnosticians to practice in Texas. The Texas required endorsement is acquired by passing a state mandated assessment covering the standards set by SBEC (TAC§231.623). Given the evolving role of an educational diagnostician, this study examined the perceptions of educational diagnosticians, administrators, and classroom teachers of the competencies in regards to implementation, utilization, and importance. Furthermore, this study sought to determine if years of experience in education affects these perceptions. Results indicate that administrators and teachers perceive the utilization of competencies to occur at a lower rate than diagnosticians report utilizing them, and years of experience showed no statistically significant effect on perceptions. No statistically significant interactions were found among position, years of experience, and perceptions of the competencies.