This is a long-shot as it shows the background fully and hardly showing the main person . This really set the sets the setting of the upcoming scenes. The main character is on the far left but isn't introduced in this scene.

This is another long shot but now properly showing the student. He is sitting on a chair by himself minding his own business. This may give a sense of vulnerability and foreshadow the following shots.

This is an over the shoulder shot exposing the person's shoulder. The person's face isn't fully shown as his identity hasn't been revealed yet by the main character .This makes it a secret to the audience aswell as to whom he is.

 Another over the shoulder shot but this time the student has noticed the person and the shot is taken from a high angle. The person's face is still not shown.  This is because it hasn't been revealed of what type of person he is or what he has come for yet. The shot is normally used when characters in a shot are engaged in a conversation. The person is trying to do that now.

Here is a medium shot only showing the characters from head to waist. The bully's face is  now shown as it is finally known that he isn't a good person but a BAD one. The shot is taken from a high angle to make the bully look far more superior than the other person.

 Here is a wide-shot. In the far distance, a new character has been introduced(the teacher). The bully and the main character don't seem to notice this. This shot makes the audience aware that there is someone witnessing the torture.

 Here is an unusual shot. It shows all the characters in the scene. How the bully reacted is unknown as his face is not visible in the picture. The fact that the victim has been saved by the teacher gives the audience a relieving feeling.

Here is a close up of the victims face. It clearly shows that even though he has been saved , he had gone through a terrifying experience enough for him to be scared of all his surroundings. The close up lets the audience soak in the victims emotions.