(a) For purposes of calculating a school's ADM to determine state aid, the ADM of each school in a district shall be computed by applying the following formula:

If the student count in a school isThe adjusted student count is

At leastBut less thanBaseMultiplierThe number of students in excess of

10-2039.6

20-3039.6+(1.62x20)

30-7555.8+(1.49x30)

75-150122.85+(1.27x75)

150-250218.1+(1.08x150)

250-400326.1+(0.97x250)

400-750471.6+(0.92x400)

750 or over793.6+(0.84x750).

(b) If the ADM in a school is less than 10, those students shall be included in the ADM of the school in that district with the lowest ADM as determined by the most recent student count data for that district.

(c) Except as provided in (d) of this section, if the student count in a charter school is less than 150, the adjusted student count for the school shall be calculated by multiplying the student count by the student rate for a school that has a student count of 400.

(d) If a charter school has a student count of at least 75 but less than 150 for the current year and is in the first three years of operation or had a student count of at least 75 in the previous year of operation,

(1) the adjusted student count for the school shall be calculated by multiplying the student count by the student rate for a school that has a student count of 150; and

(2) not later than February 15, the charter school shall submit for approval of the governing board of the district a plan for the following school year that includes a statement about whether the school will continue to operate if the student count remains the same that year and, if so, a projection of the funding anticipated from the state and other sources, a proposed budget, and a description of anticipated changes to the school staff, program, and curriculum; if the school intends to close if the student count remains the same the following year, the plan must describe transfer plans for students, staff, facilities, and materials.

(e) If an alternative school has a student count of more than 120 but less than 175 for the current year and is in the first year of operation or had a student count of 175 or more in the previous year of operation, the adjusted student count for the school shall be calculated by multiplying the student count by 95 percent of the student rate for a school that has a student count of 175.

(f) In (c) - (e) of this section, “student rate” is calculated by adding the base and the multiplier provided under (a) of this section and dividing the sum by the student count.