A deputy assessor shall be considered eligible to remain in the deputy’s present position provided continuing education requirements are met. To become eligible for another deputy assessor position, a deputy assessor presently holding office is required to obtain certification as provided for in sections 441.5 and 441.10 . The number of credit hours required for certification as eligible for appointment as a deputy in a jurisdiction other than where the deputy is currently serving shall be prorated according to the completed portion of the deputy’s six-year continuing education period. [C46, §405.9; C50, 54, 58, §405.9, 441.3; C62, 66, 71, 73, 75, 77, 79, 81, §441.11 ] 90 Acts, ch 1233, §29 ; 97 Acts, ch 158, §38 ; 2003 Acts, ch 145, §286 ; 2006 Acts, ch 1030, §40