CA Educ Code Section 46603

(a)

For a period not to exceed two school months, the governing board of a school district may provisionally admit to the schools of the school district a pupil who resides in another school district, pending a decision of the two governing boards of the school districts, or by the county board of education upon appeal, regarding the interdistrict attendance.

(b)

Regardless of whether the decision on interdistrict attendance is allowed, the provisional attendance may be counted by the school district of attendance for state apportionment purposes.