(a) In accordance with the Texas Education Code (TEC), §39.028, the commissioner of education shall develop a schedule to obtain nationally comparative results for the grades and subject areas for which academic content area assessments are adopted under the TEC, §39.023.(b) The Texas Education Agency will use sampling and other techniques to minimize the disruption to schools and loss of instructional time required of school districts to obtain nationally comparative data.(c) The nationally comparative data will be collected by using nationally recognized instruments for obtaining valid and reliable normative data from a sample of Texas students.