Ran Masaki plays a beautiful teacher who is transferred to a remote mountain school where she is gang-raped and abused by the male students.She is also turned into sex slave and subjected to sexual torture by bondage freaks.Masahito Segawa's "Beautiful Teacher in Torture Hell" is not as nasty as its lurid title suggests.Of course there is plenty of rape and sado-sexual violence,but the film never reaches the level of nastiness of "Captured for Sex 2" or "All Women Are Whores".The plot is interesting and offers some surprises and the acting is decent.All in all,if you are pinku eiga completist you can't miss it-just don't expect something totally depraved or disturbing.8 out of 10.