In fight with Whitney, cameraman comments on chastity device the students have not seen.

In a fight with Whitney

The excited girl points her camera at your chastity belt. A light flashes as she takes a picture. "As if that will help you stay pure."

When Leighton inspected the students, the player character fled the room. I believe the students have not seen the chastity belt. It has also not been exposed in this fight.