Wis. Stat. § 457.033

The marriage and family therapy, professional counseling, and social work examining board and the psychology examining board shall jointly promulgate rules that specify the different levels of psychometric testing that a credential holder, or an individual who is exercising a multistate authorization to practice, is qualified to perform. Such rules shall be consistent with the guidelines of the American Psychological Association, or other nationally recognized guidelines, for performing psychometric testing. A credential holder or individual who is exercising a multistate authorization to practice may not engage in psychometric testing except as provided under the rules promulgated under this section.