Visible crew/equipment: Before Cady enters the house, when one of her best friends is watching a movie the reflection of a crew member is visible on the TV.
Visible crew/equipment: When Damien and Janis drive off leaving Cady on the sidewalk with a picture, a large square stage light on the set is reflected in the window of the back car door (probably one which lights the ground to give the effect of a streetlight). It is too large and bright to be one of the lights from a house across the street.
Chosen answer: The first time she goes in with Damian and Janice is their homeroom and when she is with Aaron it is the actual class.
Movieman123