This is a key finding. This is exactly the age— the first year of high school in many US school districts— when kids are both shoved to the bottom of the hierarchy and told they're being prepared for adulthood. In the current environment, the queerer kids are terrified.
Among 9th graders, bisexual identification fell from 11.0% to 6.9% between 2023 and 2025. That is where it was in 2019 (7.0%). No other grade had a significant change.