In Shinsekai Yori (From the New World), children who show the potential to become either Akkis (fiends/ogres) or Gouma (karma demons) are killed off and removed from society.

Examples:

• Katayama Manabu - He cheats in the ball tournament and is disposed of near the end of episode 2.
• Aonuma Shun - He becomes a karma demon and dies after episode 10.
• Kutegawa Izumi - She becomes a karma demon and is told to commit suicide in Tomiko's dialogue in episode 12.

But what about Amano Reiko?

She "disappears" at the end of episode 1. But what did she do wrong?
It was apparent that she wasn't skilled with her juryoku (psychic power or Cantus). But is that reason enough to kill her off?