California Code, Education Code - EDC § 22802

(1) Service as a substitute excluded under Section 22602.

(2) Creditable service subject to coverage under the Cash Balance Benefit Program if the member is currently contributing to the Defined Benefit Program and has terminated all service subject to coverage under the Cash Balance Benefit Program. Upon requesting to purchase service credit under this paragraph, the member shall cease to be eligible for a benefit for the same service or time previously credited under the Cash Balance Benefit Program pursuant to Part 14 (commencing with Section 26000).

(3) Service performed on a part-time basis excluded under Section 22601.5 or Section 22604, other than service credited under paragraph (2).

(4) Adult education service excluded under Section 22603, as it read on December 31, 1995.

(5) Service as a school nurse excluded under Section 22606, as it read on December 31, 1995.

(6) Service performed in a position prior to the date the position was made subject to coverage under the Defined Benefit Program.

(7) Service subject to coverage under the Defined Benefit Program performed while a member of another California public retirement system, provided the member has ceased to be a member of, and has ceased to be entitled to benefits from, the other retirement system. The member shall not receive credit for the service if the member may redeposit withdrawn contributions and subsequently be eligible for any benefits based upon the same service or based upon other full-time service performed during the same period, from another California public retirement system.