(a) Except as provided by Subsection (c), a school district is entitled to an annual allotment equal to the basic allotment multiplied by the applicable weight under Subsection (a-1) for each enrolled student equal to the difference, if the difference is greater than zero, that results from subtracting 250 from the difference between the number of students enrolled in the district during the school year immediately preceding the current school year and the number of students enrolled in the district during the school year six years preceding the current school year.
(a-1) For purposes of Subsection (a), the agency shall assign the following weights:
(1) 0.48 for each student enrolled at a district in the top 40 percent of districts, as determined based on the number of students calculated under Subsection (a);
(2) 0.33 for each student enrolled at a district in the middle 30 percent of districts, as determined based on the number of students calculated under Subsection (a); and
(3) 0.18 for each student enrolled at a district in the bottom 30 percent of districts, as determined based on the number of students calculated under Subsection (a).

(a-2) Notwithstanding Subsection (a-1), for the 2021-2022 school year, instead of using the weights under that subsection, the agency shall substitute the following weights:
(1) 0.45 for each student enrolled at a district in the top 40 percent of districts, as determined based on the number of students calculated under Subsection (a);
(2) 0.30 for each student enrolled at a district in the middle 30 percent of districts, as determined based on the number of students calculated under Subsection (a); and
(3) 0.15 for each student enrolled at a district in the bottom 30 percent of districts, as determined based on the number of students calculated under Subsection (a).
(a-3) Subsection (a-2) and this subsection expire September 1, 2024.
(b) For purposes of Subsection (a), in determining the number of students enrolled in a school district, the commissioner shall exclude students enrolled in the district who receive full-time instruction through the state virtual school network under Chapter 30A.
(c) Notwithstanding Subsection (a), the total amount that may be used to provide allotments under Subsection (a) may not exceed $320 million. If the total amount of allotments to which districts are entitled under Subsection (a) for a school year exceeds the amount permitted under this subsection, the commissioner shall proportionately reduce each district’s allotment under this section.
(c-1) Notwithstanding Subsection (c), the total amount that may be used to provide allotments under Subsection (a) may not exceed:
(1) for the 2021-2022 school year, $270 million;
(2) for the 2022-2023 school year, $310 million; and
(3) for the 2023-2024 school year, $315 million.
(c-2) Subsection (c-1) and this subsection expire September 1, 2025.

For expiration of Subsections (a-2) and (a-3), see Subsection (a-3).

For expiration of Subsections (c-1) and (c-2), see Subsection (c-2).
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