Location: The nerd's old house.
"U.G.L.Y, you ain't go no alibi. You ugly! You ugly!"
Mandy, the head cheerleader, is such a naughty girl. Take inappropriate pics of her!
Run to the Girl's Dorm. Around the corner, to the right, climb the ladder up to the attic. Before approaching Mandy, who is in the girl's shower, hide in the closet until the old lady goes to the bottom floor. In the girl's bathroom, don't walk in the shower, but stand outside the bathroom and take a pic.
For the third and last picture, stand in front of her bedroom's door and snap the pic