Teacher finds bitcoin “gambling and worst investment ever”

Hello everyone. I am a 14 year old student and we were talking about money in economics class and bitcoin popped up in the conversation. I made my points myself but the teacher didn’t even bother listening to me as bitcoin is supposedly “a scam and gambling”. Considering a teacher somewhat takes part in education, i find this absurd. I was trying to discuss with her why i don’t agree with her she told me that if i talked back more i was gonna get sent to the principals office. What are your thoughts on this?