Forget the talking. It's the actions that indicate what the real thoughts are.
"Gender nuetral" toilets
Girls as buffer zones
Seating plans
Refusal of access to toilets and being left to bleed through clothes
Uniform "options" that dont take onto account girls changing body shapes etc
Less sports options
Low take up of stem In mixed schools by girls
All these are good indicators of how little girls are thought of on school environments.