27 Miss. Code. R. 210-04-102
Employees of public schools, other than teachers, are not automatically included in the state retirement annuity coverage, but may be included by separate agreements made with the superintendents of the various school districts, or these employees of the various school districts may be included as participating units of agreements negotiated with the various counties or municipalities in which the school district is located.
Effective July 1, 1973, all public school employees other than teachers, such as bus drivers, janitors, maids, maintenance workers and cafeteria employees, had the option to participate in state retirement annuity coverage. Employees hired in those positions after July 1, 1973, shall be covered automatically without the necessity of a separate joinder agreement provided they meet the work requirements as set forth in Regulation 8 and Regulation 36.
27 Miss. Code. R. 210-04-102