Texas Administrative Code (TAC) §230.5(b) requires every person seeking educator certification in Texas to perform satisfactorily on comprehensive examinations.

The purpose of these examinations is to ensure that each educator has the prerequisite content and professional knowledge necessary for an entry-level position in Texas public schools.
The Texas Examinations of Educator Standards (TExES) program and the Examination for the Certification of Educators in Texas (ExCET) program were developed for this purpose.