The number of basic program units is determined by multiplying the basic program MEM in each grade by the corresponding cost differential factor as follows: Grades Cost Differential Factor 1 1.2 2 and 3 1.18 4 and 5 1.045 6 through 12 1.30. History: 1978 Comp., § 22-8-20, enacted by Laws 1991, ch. 85, § 3; 1993, ch. 2, § 1; 1993, ch. 226, § 21; 1993, ch. 226, § 22; 1993, ch. 228, § 2; 1993, ch. 228, § 3; 2025, ch. 89, § 4.