California Code, Education Code - EDC § 24402

(a) Service retirement allowances, disability allowances, disability retirement allowances, family allowances, and survivor benefit allowances payable pursuant to this part shall be increased by application of the benefit improvement factor.

(b) Allowances payable to beneficiaries on account of options elected under Section 24300, 24300.1, 24307, or 24332 shall be increased by application of the improvement factor. This factor shall be applicable on the same date when it would have been applied to the allowance of the deceased person.

(c) The benefit improvement factor shall not be applied to an annuity that is the actuarial equivalent of the accumulated annuity deposit contributions standing to the credit of the member's account on the effective date of a service or disability retirement.