Whatever...
Saving the would-be instrument from an early retirement, you steathily creep back to your chair with the pencil.
HA! The teacher didn't even notice!
Getting out a tiny pencil sharpener, you sharpen the pencil to a fine, deadly point. Attaching the pencil to a ruler with some gum and tape you had (MacGyver style!), you quickly jab the pencil into the girl's kidney the first time she isn't paying attention, and then break it off so that the lead remains.
She yelps in pain, but the teacher assumes she's being disruptive and shoves her out of class, ordering her to the principal's office, before she can plead her case.
Days later, you hear she died of lead poisoning.
Whatever.
HA! The teacher didn't even notice!
Getting out a tiny pencil sharpener, you sharpen the pencil to a fine, deadly point. Attaching the pencil to a ruler with some gum and tape you had (MacGyver style!), you quickly jab the pencil into the girl's kidney the first time she isn't paying attention, and then break it off so that the lead remains.
She yelps in pain, but the teacher assumes she's being disruptive and shoves her out of class, ordering her to the principal's office, before she can plead her case.
Days later, you hear she died of lead poisoning.
Whatever.