Since the Friday incident at Arthur L. Johnson High School, the 16-year-old had remained in custody, pending a detention hearing, according to Clark police and township officials.
While finding probable cause of racial offensive language, the Division of Civil Rights probe did not find proof that the Capital Health worker was fired in retaliation - as she had a record of attendance issues.
The name of former Assembly Speaker Benjamin Van Cleve was taken from the school's Alumni House after a task force found he supported slavery in the late 1700s.