Heres the full walkthrough! ----------------------------- Chapter 1:
Walk up to the yellow dot, and the teacher will look up. When she is looking toward the window, cheat(CTRL) Simple! Watch the cutscene.
Chapter 2:
Watch the cutscene. When you are back in a classroom, look for the geek. Im pretty sure its the same for everyone, but iv been wrong before. For me, and most likely for you too, its 2 seats up and 1 seat left from yours.