Overview: We identified 75 scholarly studies that met our criteria for addressing the wellbeing of children with gay or lesbian parents. Of those studies, 71 concluded that children of gay or lesbian parents fare no worse than other children. While many of the sample sizes were small, and some studies lacked a control group, researchers regard such studies as providing the best available knowledge about child adjustment, and do not view large, representative samples as essential. We identified three studies concluding that children of gay or lesbian parents face added disadvantages. Since all three took their samples from children who endured family break-ups, a cohort known to face added risks, these studies have been criticized by many scholars as unreliable assessments of the wellbeing of LGB-headed households. Taken together, this research forms an overwhelming scholarly consensus, based on over three decades of peer-reviewed research, that having a gay or lesbian parent does not harm children.