Mo. Rev. Stat. § 162.722
162.722 Acceleration of students, subject or whole grade, when.
162.722. Acceleration of students, subject or whole grade, when. — 1. Each school district shall establish a policy, approved by the board of education of the district, that allows acceleration for students who demonstrate:
(1) Advanced performance or potential for advanced performance; and
(2) The social and emotional readiness for acceleration.
2. The policy shall allow, for students described in this section, at least the following types of acceleration:
(1) Subject acceleration; and
(2) Whole grade acceleration.
(L. 2018 H.B. 1606 merged with S.B. 743)