Little is known about how teachers learn about the adoptive status or background of their students, or how they use this information. This mixed-methods study examined U.S. teachers' experiences with obtaining and using information about children's adoptive status and background. Data were gathered via an online survey. Respondents were 207 K-12 teachers, paraprofessionals, and other school professionals. Teachers most often learned a child was adopted from the child themselves, followed by the parents. Sometimes they learned the information in the context of a child's emotional/behavioral difficulties or their specialized education plan. Almost half had wanted to know more about a child's adoptive status or history but were unsure of how or who to ask. Findings have implications for teachers, school support staff, and adoptive families.