N.H. Rev. Stat. Ann. § 227-C:10

The division shall provide a means for training nonprofessional persons in technical archeological skills and shall acknowledge the achievement of those who have reached prescribed levels of proficiency in various aspects of archeology. The individuals shall be encouraged to participate in field investigations authorized by the commissioner and supervised by the division. Certification is not to be misconstrued as an authorization to collect or excavate without a permit.