N.Y. Comp. Codes R. & Regs. tit. 19, § 204.9 – Examination requirement and record retention.

(a) All approved organizations shall retain the attendance records, the final examinations and a list of crematory employees who successfully complete each certification course for a period of five years after completion of each course. All such documents shall during normal business hours be available for inspection by authorized representatives of the Division of Cemeteries.
(b) All examination required for certification shall be in the form of a written take home examination and shall be returned to the educational provider within two weeks after distribution.