Texas Tech University Independent School District (TTUISD) offers a full-time diploma progam and an option for students to supplment their school or homeschool curriculum. TTUISD also provides K-12 educational solutions to public and private schools, charter schools, districts, and Regional Service Centers. Courses and CBEs are aligned with the Texas Essentail Knowledge and Skills (TEKS). TTUISD's Elementary, Middle and High Schools are accredited by the Texas Education Agency (TEA). Whether you want to take a course or Credit by Exam, TTUISD can help.