California Code, Education Code - EDC § 48356

(a) A school district of enrollment may adopt specific, written standards for acceptance and rejection of applications pursuant to this article.  The standards may include consideration of the capacity of a program, class, grade level, school building, or adverse financial impact.  Subject to subdivision (b), and except as necessary in accordance with Section 48355, the standards shall not include consideration of a pupil's previous academic achievement, physical condition, proficiency in the English language, family income, or any of the individual characteristics set forth in Section 200.

(b) In considering an application pursuant to this article, a nonresident school district may apply its usual requirements for admission to a magnet school or a program designed to serve gifted and talented pupils.

(c) Subject to the rules and standards that apply to pupils who reside in the school district of enrollment, a resident pupil who is enrolled in one of the district's schools pursuant to this article shall not be required to submit an application in order to remain enrolled.

(d) A school district of enrollment shall ensure that pupils enrolled pursuant to standards adopted pursuant to this section are enrolled in a school with a higher Academic Performance Index than the school in which the pupil was previously enrolled and are selected through a random, unbiased process that prohibits an evaluation of whether or not the pupil should be enrolled based on his or her individual academic or athletic performance, or any of the other characteristics set forth in subdivision (a), except that pupils applying for a transfer pursuant to this article shall be assigned priority for approval as follows:

(e) The initial application of a pupil for transfer to a school within a school district of enrollment shall not be approved if the transfer would require the displacement from the desired school of any other pupil who resides within the attendance area of that school or is currently enrolled in that school.

(f) A pupil approved for a transfer to a school district of enrollment pursuant to this article shall be deemed to have fulfilled the requirements of Section 48204.