Training is provided and a JD is not required.

> As a volunteer, you are responsible for gathering facts surrounding a child’s case, reviewing reports, finding out the child’s wants and desires, visiting a child’s home, school, or placement, and providing the court with an unbiased recommendation on what is required to serve the child’s best interests. The volunteer assists in providing the judge with the information needed and what the child wants, so the judge can decide what is in the child’s best interests.

https://guardianadlitem.org/volunteer-with-guardian-ad-litem...