The following words and terms, when used in this subchapter, shall have the following meanings, unless the context clearly indicates otherwise.(1) Abnormal spinal curvature--An anatomic, structural deviation from the normal spinal curve, such as scoliosis or kyphosis.(2) Certification--The process by which the Department of State Health Services (department) trains individuals to conduct spinal screening as well as to then provide training screening procedures.(3) Chief Administrator--The principal (or designee) of a school as defined by the Texas Education Agency,