(a) Each local board of education shall develop a policy by which student scores on the Tennessee comprehensive assessment program's grades three through eight (3-8) achievement tests shall comprise a percentage of the student's final grade for the spring semester in the subject areas of mathematics, English language arts, science, and social studies. In the 2017-2018 school year and each school year thereafter, the local board shall determine the percentage within a range of zero percent (0%) to no more than twenty-five percent (25%) for grades three through five (3-5), and within a range of no less than ten percent (10%) to no more than twenty-five percent (25%) for grades six through eight (6-8).

(b) Notwithstanding subsection (a), if an LEA does not receive its students' TCAP scores, including all achievement test and end-of-course examination scores for grades nine through twelve (9-12), at least five (5) instructional days before the end of the course, then the LEA may choose not to include its students' TCAP scores, including all achievement test and end-of-course examination scores for grades nine through twelve (9-12), in the students' final grades in the subject areas of mathematics, English language arts, science, and social studies.

(c) Notwithstanding subsection (a), each local board of education may choose the percentage within the range of zero percent (0%) to fifteen percent (15%) that scores from the TNReady assessments administered in the 2017-2018 school year shall count on a student's final grade for the spring semester.