You have to take (and pass) two tests (along with a lot of other observational paperwork) to get certified to teach in Texas. To probationally teach (without certification, for a year) you must pass the subject matter exam.
It is the TExES (Texas Examinations of Educator Standards), and I took the Math 8-12 on Sat Jun 28. Just got the results back. You need a 240 out of 300 to “pass”. Drum roll, please…