The Texas Assessment of Knowlege and Skills (TAKS) is a standardized test used in Texas primary and secondary schools to assess students' attainment of reading, writing, math, science, and social studies skills required under Texas education standards. It is developed and scored by Pearson Educational Measurement with close supervision by the Texas Education Agency. Though created before the No Child Left Behind Act was passed, it complies with the law. It replaced the previous test, called the Texas Assessment of Academic Skills or TAAS, in 2003.