A. No school board member, school superintendent, assistant superintendent, principal, school counselor, other teacher or other administrative staff member of the school or the central staff of a parish or city school board shall attempt, directly or indirectly, to influence, alter, or otherwise affect the grade received by a student from his teacher except as otherwise specifically permitted by this Section.
B.(1) A teacher's determination of a student's grade as a measure of the academic achievement or proficiency of the student shall not be altered or changed in any manner by any school official or employee other than the teacher except as provided in this Subsection.
(2) A school official or employee having authority pursuant to formally adopted written rules and procedures adopted by the governing authority of the public elementary or secondary school to change a student's grade can take such action only upon it being determined that the grade is an error or that the grade is demonstrably inconsistent with the teacher's grading policy.
C. A teacher's determination of a student's grade as a measure of the academic achievement or proficiency of the student shall not be used in any manner as a basis for assessing or evaluating the teacher's performance except for grade changes occurring pursuant to the provisions of this Section.