The Tennessee Constable Association, the Tennessee Constable Council, and the East Tennessee Constables Association may develop and maintain a series of in-service education courses to be offered routinely throughout the year in the various divisions of the state. These courses shall be offered at nights or on weekends so as not to interfere with the constables’ other full-time work. Courses offered shall contain information pertinent to the various aspects of civil and criminal process, firearms certification, and other issues relative to the powers and duties of constables. The constables shall pay costs of the courses unless state or local funds are made available. Upon completion of the in-service course, the Tennessee Constable Association, the Tennessee Constable Council, or the East Tennessee Constables Association, as applicable, shall issue a certificate of completion to each officer.