Cal. Education Code § 46013

(a) If there is an increase in actual student attendance of any school maintained by a school district to which Section 46013.7 has been made applicable, then an increase in the revenue limit of a school district shall be calculated as follows: (1) The Superintendent of Public Instruction shall prescribe the manner in which actual student attendance is calculated. (2) Divide the actual student attendance in the 1979–80 fiscal year by total enrollment in the 1979–80 fiscal year. (3) Divide the actual student attendance in the current fiscal year by total enrollment in the current fiscal year. (4) Subtract the quotient calculated pursuant to paragraph (2) from the quotient calculated pursuant to paragraph (3). (5) Divide the difference calculated pursuant to paragraph (4) by 0.02. (6) If the quotient calculated pursuant to paragraph (5) is equal to or greater than one, then divide that quotient by 100. (7) If the quotient calculated pursuant to paragraph (5) is less than one, then the district shall not be affected by the provisions of this section. (8) Multiply the quotient calculated pursuant to paragraph (6) by the revenue limit per unit of average daily attendance in the current fiscal year, and multiply that product by the total enrollment of the school which generated the increased actual student attendance. This is the amount by which revenue limit shall be increased. (b) The revenue limit increase calculated pursuant to subdivision (a) shall be allocated as follows: (1) If the school receives funds pursuant to either Chapter 3.1 (commencing with Section 44670) of Part 25 or Chapter 6 (commencing with Section 52000) of Part 28, then one-half of the increase shall be added to such funds; the other half of the increase shall be added to the general fund of the district. (2) If the school does not receive funds pursuant to either Chapter 3.1 (commencing with Section 44670) of Part 25 or Chapter 6 (commencing with Section 52000) of Part 28, then one-half of the increase shall be used to initiate a program pursuant to Chapter 6 (commencing with Section 52000) of Part 28 at the school; the other half of the increase shall be added to the general fund of the district. If a program is not initiated pursuant to Chapter 6 (commencing with Section 52000) of Part 28 within one year, then those funds shall be deposited in the general fund of the district and the apportionment of funds to the district from Section A of the State School Fund for the then current fiscal year shall be reduced by the same amount.