House committee substitute makes the following changes to 1st edition. Enacts new section GS 115C-81.36, requiring local boards of education to offer advanced courses in mathematics for grades three and higher when practicable. Requires that any student who scores a level five or higher on the end-of-grade or end-of-course mathematics test be enrolled in an advanced mathematics course for their next mathematics course, if available. Requires seventh grade students who score a five to be enrolled in high school level mathematics in the eighth grade. Forbids removing any such student from the advanced or high school level mathematics course unless a parent or guardian gives written consent. Applies beginning in the 2018-19 school year.  Makes conforming changes to the act's long title.