I went to Catholic high school and I do remember my Irish-American classmates referring to f***ing Jew bastards, but probably just to get a rise from me. I wish I could say that I refused to take the bait, but actually, I was shocked, but didn't react. If I had to do over, I would have ridiculed their inane racism.
Did you go to school in Boston? I’m lucky that I missed most antisemitism. My High School was heavily Jewish so it never occurred to anyone to be nasty. I went to Catholic grammar school but never heard that stuff either. Maybe I suppressed it!