N.Y. Comp. Codes R. & Regs. Tit. 20 §§ 8188-2.7
In addition to the orientation seminar and the ethics component, an assessor must satisfy the assessment administration component of the basic course of training by the end of the first year of a term of office. If the assessor has satisfied the assessment administration component prior to commencing his or her first year of a term in office, the assessor must successfully complete another component of the basic course of training by the end of the first year of a term of office in order to receive an interim certificate. The assessor must successfully complete the cost, market and income component of the basic course of training by the end of the second year of a term of office in order to receive an interim certificate. In no event shall an interim certificate remain in effect more than one year after its date of issuance or beyond the date by which the assessor must attain certification.
N.Y. Comp. Codes R. & Regs. Tit. 20 §§ 8188-2.7