If you have all three of the following criteria, you may request a review of credentials with TEXAS EDUCATION AGENCY to obtain certification in the state of Texas: 

* You have the equivalent of a four-year bachelors degree from an accredited institution

* You have completed an educator preparation program that includes a teaching practicum

 * You have a teaching certificate or qualification from your home country

Link: Texas Education Agency / Certification Based on Credentials from another Country

Additional Requirements: 

* A course-by-course evaluation by a recognized       foreign evaluation service

* documentation of English language proficiency:   educators who apply for certification are required to   demonstrate English language proficiency by fulfilling   one of the following requirements: 

1. Completion of an undergraduate or graduate   degree at an accredited institution of higher   education in the United States, not including US   Territories

2. Completion of an undergraduate or graduate degree  at an institution of higher education in a   country in which English is the Official Language. 

   List of countries @ Countries in which English is the Official Language

3.  TOEFL iBT