TTU K-12 is an online kindergarten through 12th grade school accredited by the Texas Education Agency and the National Collegiate Athletic Association (NCAA). Our elementary, middle, and high school options meet the same rigorous standards as traditional brick-and-mortar schools, but have no physical location or geographic limitations.Students can enroll in courses through TTU K-12’s full-time diploma program, in which they take all the state-required courses and assessments to graduate. Upon graduation, students receive a Texas high school diploma.TTU K-12 also offers a supplemental program. Students can make up credits or get ahead by taking individual courses or credit by exams while still enrolled in their current school or district.Begin at any time. There are no enrollment deadlines!