The seventeen–year–old is charged with first degree assault for attacking a classmate at Lincoln Pius X High School in October.
Piccolo waived her right to a jury and speedy trial. Her plea hearing is set for Aug. 11 at 2 p.m. in district court. Piccolo's attorney DeAnn Stover says a plea agreement has been made, and that is all she can say about it.
Last month, Piccolo was found mentally competent to stand trial. Prosecutors say she waited in a school bathroom armed with a hammer and knife.