On the bus, when Massie is texting Claire, she is standing up in the back of the bus. When Claire is asking Layne for the oatmeal to help with the girls' lip swelling, Massie is sitting down. As soon as Claire gets up to distribute the oatmeal, Massie is standing up again.
When Massie is in the sports area about to plays quash, the windows in the background behind her appear dark, implying that it is nighttime. When Claire and the other 3 members of The Clique leave Massie and it shows her in front of the camera with her racket and a sad look, the windows behind her are a bright blue, implying that it is daytime.
When Massie and the rest of their clique are walking down the hall, Massie's earrings are both clearly secured. Later on, she concluded that she lost it before, while they were outside or in the Range Rover.
When the girls find out Claire hi-jacked Massie's Instant messenger, Kris calls Claire and is holding the phone on her right ear, but changes to the left ear after Massie sends Claire an instant message.