AUTHORITY: section 161.092, RSMo Supp. 2014, and section 178.430, RSMo 2000. This rule was previously filed as 5 CSR 40- 680.050. Original rule filed Dec. 24, 1975, effective Jan. 3, 1976. Amended: Filed July 13, 1976, effective Nov. 1, 1976. Amended: Filed Aug. 9, 1976, effective Dec. 1, 1976. Amended: Filed June 21, 1977, effective Oct. 17, 1977. Amended: Filed Jan. 31, 1979, effective May 14, 1979. Amended: Filed July 13, 1979, effective Oct. 12, 1979. Amended: Filed Aug. 16, 1979, effective Nov. 12, 1979. Amended: Filed Nov. 17, 1980, effective SECONDARY EDUCATION March 16, 1981. Amended: Filed Nov. 6, 1981, effective Feb. 15, 1982. Amended: Filed April 26, 1982, effective Aug. 13, 1982. Amended: Filed June 7, 1983, effective Sept. 12, 1983. Amended: Filed July 10, 1984, effective Oct. 15, 1984. Amended: Filed July 1, 1987, effective Sept. 24, 1987. Amended: Filed May 23, 1990, effective Sept. 28, 1990. Amended: Filed Oct. 23, 1991, effective March 9, 1992. Amended: Filed April 21, 2016, effective Nov. 30, 2016. Rescinded: Filed Aug. 19, 2021, effective March 30, 2022.