Cal. Education Code § 46208

(a) Notwithstanding Sections 46200 to 46205, inclusive, upon a determination that a school district equals or exceeds its local control funding formula target computed pursuant to Section 42238.02 as determined by the calculation of a zero difference pursuant to paragraph (1) of subdivision (b) of Section 42238.03, each school district, as a condition of apportionment pursuant to Section 42238.02, as implemented pursuant to Section 42238.03, shall offer 180 days or more of instruction per school year. A school operating as a multitrack year-round school shall be deemed to be in compliance with the 180-day requirement if it certifies to the Superintendent that it is a multitrack year-round school and maintains its school for a minimum of 163 schooldays. (b) Notwithstanding subdivision (a), for the 2013–14 and 2014–15 school years, a school district that equals or exceeds its computed local control funding formula target may reduce the equivalent of up to five days of instruction or the equivalent number of instructional minutes without incurring the penalties set forth in this section. (c) For a school district that has met its local control funding formula target and that offers fewer than the number of instructional days required pursuant to this section, the Superintendent shall withhold from the school district’s local control funding formula grant apportionment pursuant to Section 42238.02, as implemented by Section 42238.03, for the average daily attendance of each affected grade level, the sum of 0.0056 multiplied by that apportionment for each day less than what was required pursuant to this section, for up to five days.