FORT LAUDERDALE, Fla. (MCT) — The brutal beating of Josie Lou Ratley on the campus of Deerfield Beach Middle School was not the act of an insane person, but the calculated crime of an angry young man intent on murder, a Broward jury ruled on Monday.

It took jurors four hours to deliberate a guilty verdict and reject the insanity defense of Wayne Treacy, the former Deerfield Beach High School student charged with attempted first-degree murder with a weapon. In March 2010, Treacy threw Ratley to the pavement, then repeatedly slammed her head against the ground and kicked her in the head with steel-toed boots because she sent him a taunting text message about his dead brother.