4. 18 years of age or 16 with completion of a driver education course
The minimum age requirement for a Driver License in Texas is 18 years of age or 16 with completion of a driver education course.
More info from the web:
If you are under 18 years of age, one of the first requirements is completion of a driver education course.
You can begin the classroom phase of a driver education course at 14 years of age, but you cannot apply for a learner license until you are at least 15 years of age.
In addition to above, you must complete and pass a driver education course, vision test, knowledge test, and driving test. You must meet all other requirements for an original applicant.
Note: There might be some changes, please cross-verify by your own.