Cal. Code Regs. tit. 2, § 1865.35
(a) For the purpose of computing the building area allowance for small elementary school districts in accordance with Section 17743 of the Education Code, the following shall apply:
(1) In an applicant district maintaining any combination of grades kindergarten through 6 with an estimated average daily attendance of less than 300 in such grades:
Estimated ADA in Kindergarten and Grades 1-6
Maximum Total Building Area (Sq. Ft.)
6-25
1,600
26-50
3,800
51-75
5,700
76-100
7,200
101-133
8,415
134-166
10,200
167-199
12,000
200-232
13,360
233-285
15,675
286-299
16,500