Joe Piro made the remarks at a student assembly held at Madison High School, during which Piro described Hitler as a "good leader" with "bad moral character and intentions."
Madison Superintendent of Schools Mark Schwarz said in a letter to parents sent shortly after the presentation in mid-March that the material had not been reviewed beforehand.
Schwarz apologized in the letter and said material would be reviewed ahead of time going forward.
Click here to follow Daily Voice Cliffside Park-Edgewater and receive free news updates.