Name changed for this as it could be pretty outing.
Apparently it was a YouTube video, and the idea of the class was to teach them about feelings?! WTAF. AIBU to think that there are a gazillion other more appropriate ways to teach 12 year old about feelings than watching a man get into bed with balloons and tell people it arouses him?
Obviously I don't know exactly what they watched but it all seems a bit weird to me. I did clarify that the teacher showed them this and he said yes. It was part of the class.
It just seems a bit odd