N.M. Stat. § 22-2-8.13
Standardized statewide grading system.
The department shall adopt and promulgate rules to establish a standardized
alphabetic or numeric grading system based on the 4.0 scale or one hundred percent
scale to be used by public schools, including charter schools, for grades three through
twelve that is aligned with the New Mexico academic content standards and
benchmarks and performance standards. A public school shall include the results of
standards-based assessments in the standardized grading system and may augment
the standardized grading system with a narrative or other method that measures a
student's academic, social, behavioral or other skills.