Continuity: When she's talking to the guidance counsellor, in the close-ups we can see some stadium lighting outside the window over the counsellor's shoulder. In the wide shots it disappears, and is replaced by the sea. It's definitely the same window - the ornaments on the window sill are the same, and the plant to the right is the same. (Time)

Continuity: When Bianca takes Cameron to Kat's room, she opens the third drawer. But when the camera angle changes, it's the second drawer that's opened. (Time)

Continuity: When Kat and Patrick are in the car after the party, when they're driving there's no rear view mirror, but one appears once they stop. (Time)

Continuity: When Kat and Patrick are playing paintball right before they kiss you can see that they are barely covered in paint. When they do kiss and are on the ground, they are totally covered with it. (Time)