Wait, is that yours? I watched it when it was posted in another thread the other day. It's great!
really good source for old 1950's "social guidance" movies - copy-write free
https://archive.org/details/prelinger
anime
the student is half girl half sea creature
she grows three new heads, says f*** you to the dad, the boyfriend, and the school, and rides off into the sunset, swishing her tentacles behind her
really good source for old 1950's "social guidance" movies - copy-write free
https://archive.org/details/prelinger