N.J. Stat. Ann. § 40A:9-154.6c

3. The director shall issue, upon the payment of a fee, a public works manager certificate to any applicant who meets the definition of a certified public works manager or a public works manager who has successfully completed a certified public works manager program described in section 2 of this act, is not less than 21 years of age, is a citizen of the United States, is of good moral character, and has obtained a high school diploma as described in section 2 of this act.