More than three-quarters of adult respondents (80%) and nearly two-thirds of 16- and 17-year-old respondents (60%) who were out or perceived as transgender in K-12 experienced one or more form of mistreatment or negative experience, including verbal harassment, physical attacks, online bullying, being denied the ability to dress according to their gender identity/expression, teachers or staff refusing to use chosen name or pronouns, or being denied the use of restrooms or locker rooms matching their gender identity.