Missouri Revised Statutes Title VIII. Public Officers and Employees, Bonds and Records § 105.269. Retired teacher, certain districts, may return to teaching without losing retirement benefits--rulemaking authority

1. Any metropolitan school district may allow retired teachers to teach in said metropolitan school district for up to four years without losing his or her retirement benefits or to teach or be an administrator in a charter school established pursuant to sections 160.400 to 160.420 in said metropolitan school district without losing his or her retirement benefits. Said retired teacher need not be in the teacher's salary scale. Said metropolitan school district shall place an emphasis on hiring retired teachers to teach in areas that include but are not limited to, improving student reading, which may include elementary remedial reading and the “Read to be Ready Program” as established under this act, math, science and special education.

2. The department of elementary and secondary education shall adopt rules to implement the provisions of this section.

3. Any rule or portion of a rule, as that term is defined in section 536.010, that is created under the authority delegated in this section and section 167.640 shall become effective only if it complies with and is subject to all of the provisions of chapter 536 and, if applicable, section 536.028. This section and section 167.640 and chapter 536 are nonseverable and if any of the powers vested with the general assembly pursuant to chapter 536 to review, to delay the effective date or to disapprove and annul a rule are subsequently held unconstitutional, then the grant of rulemaking authority and any rule proposed or adopted after August 28, 1999, shall be invalid and void.