Principal Conrad said they made the discovery only after the yearbook had been distributed to some students.
"We are appalled and angered that this quote was submitted, and I ask you to please accept my deepest apologies on behalf of our faculty, staff and administration for the insertion of these words in the yearbook," Conrad added. "Hate speech has no home here, least of all cemented in what should be a cherished keepsake. This is not reflective of who we are."
After launching an investigation into the origin of the quote, the school learned that the student who used the quote took it from source which had not identified the author of the quote. The school concluded the student was unaware of where the quote came from or "the hateful background with which it is associated." The student said he sincerely regrets his choice in using the quote in question.
The school will no longer be selling its 2018 yearbook until the page with the quote is replaced. Anyone who had already purchased a yearbook may either pick up a custom-printed sticker or have it sent to them. They can also return the yearbook to the school by Tuesday, June 19, to have the page replaced by the publisher.
The letter also mentioned a previous incident where swastikas were found drawn on a desk at the high school on the first day of Hanukkah last year.
"As a school, we began to take remedial steps after the incidents here in December," said Conrad. "Rest assured that we will continue to do that work. It is important that all of us feel safe and welcomed in our schools and that hate and hate-speech be addressed directly in a straightforward and effective manner."