PURPOSE: Section 163.161, RSMo authorizes state transportation aid to school districts based upon allowable costs. This rule defines allowable costs and specifies how they will be used in calculating state transportation aid. The rule further specifies school district recordkeeping and audit requirements related to the calculation of state aid.
If employees have other school duties in addition to those relating directly to transportation, then salaries and benefits shall be divided between school transportation and other programs according to time actually spent in each program.
Prediction Formula y = axb
y = predicted cost per student per mile for a district
x = actual miles per student per day for a district
a and b = computed amounts using the entire state's average miles per student per day (x) and average cost per student mile (y) as further defined.
Formula to compute a a = e([SIGMA]Lny-b[SIGMA]Lnx)/N e = 2.71. . .(This is a constant from mathematics. "a" is obtained by finding the natural antilog of the exponent of "e" as shown in the equation above.)
Formula to compute b
b= N[SIGMA] (Lnx.Lny)-([SIGMA]Lnx).([SIGMA]Lny)/N[SIGMA] (Lnx)2-([SIGMA]Lnx)2
The meanings of the symbols used in the formulas defining "a" and "b" are as listed:
Lnx = natural logarithm of each x Lny = natural logarithm of each y (Lnx)2 = natural logarithm of each x squared
(Lnx).(Lny) = natural logarithm of x multiplied by the natural logarithm of y for each district
[SIGMA]Lnx = sum of Lnx for all transporting districts
[SIGMA]Lny = sum of Lny for all transporting districts
[SIGMA](Lnx)2 = sum of (Lnx)2 for all transporting districts
[SIGMA](Lnx.Lny) = sum of (Lnx.Lny) for all transporting districts N = number of transporting districts
5 CSR 30-261.040
*Original authority: 161.092, RSMo 1963, amended 1973, 2002, 2003; 162.700, RSMo 1973, amended 1977, 1990, 1991, 2002, 2005, 2006; 163.161, RSMo 1963, amended 1965, 1969, 1973, 1977, 1978, 1980, 1983, 1985, 1986, 1987, 1993, 1998; 165.121, RSMo 1963; 167.231, RSMo 1963, amended 1965, 1973, 1977, 1978, 1979, 1990, 2000; and 304.060, RSMo 1949, amended 1977, 1987, 1992.