The opening shots of a naked an of badly beaten young boy (12) hanging by his wrists. The [younger] Klaus, in a state of arousal, looks longingly at and moves to kiss the boy before killing him with blows from a length of timber.
In a scene were a "new" boy is being trained by getting whipped across his back, the male pimp has a flash-back to his own childhood experience. You see a very fat man (frontal nude) slaping the boy to get him to perform oral sex on him.
A teacher enters and stops a scuffle involving bullying of Rex Deakin (John Williams) by some older boys. Rex is made to undress for the showers and his backside is seen in close-up, showing signs of being beaten.
Graham Black (Martin Kemp) pees into a sink other boys are washing in (shown from behind) then his pubic hair is visible as he bends down to pick up his towel.
Full nudity of several extras in the background of the shower scene.