(a) The holder of a California teaching credential based on a baccalaureate degree and a teacher preparation program, including student teaching or the equivalent, may develop, direct, implement, or coordinate programs designed to improve instruction and enhance student learning at the school site in grades twelve and below, including preschool, and in classes organized primarily for adults.

(b) The holder of a California designated subjects adult teaching credential may develop, direct, implement, or coordinate programs designed to improve instruction and enhance student learning for adult teaching subject areas.

(c) The holder of a California designated subjects vocational teaching credential may develop, direct, implement, or coordinate programs designed to improve instruction and enhance student learning for vocational teaching subject areas.

(d) Irrespective of the provisions set out in this section, only individuals who hold either the Reading and Language Arts Specialist Credential or Administrative Services Credential may develop, direct, implement, and coordinate school district or county reading programs. Effective July 1, 2004, school site reading programs may only be developed, directed, implemented, or coordinated by individuals who hold the Reading and Language Arts Specialist Credential, Restricted Reading Specialist Credential, Reading Certificate, or Administrative Services Credential.

(e) An individual who has developed, directed, implemented, or coordinated reading programs for a minimum of three years prior to July 1, 2004, on the basis of a California teaching credential based on a baccalaureate degree and a teacher preparation program, including student teaching or the equivalent, shall be authorized to continue in such assignment. Verification of this teaching experience must be kept on file in the office of the employing agency for purposes of the monitoring of certificated assignments pursuant to Education Code Section 44258.9(b).