A Screenplay

A screenplay or script is a written work that is made especially for a film or television programme. Screenplays can be original works or adaptations from existing pieces of writing. In them, the movement, actions, expression, and dialogues of the characters are also narrated. A play for television is known as a teleplay. The above is an example of a script. 
what makes a good script is that it meets the grading expectations:

There is a scene heading with a short description of the location and time of day of a scene.  For example:  EXT. MOUNTAIN CABIN – DAY would denote that the action takes place outside a mountain cabin during daylight hours

The character names appear on the line preceding the dialogue

There is excellent level of care and planning involved in crafting the dialogue to suit the genre

There is an excellent description of the action

There is an excellent description of diegetic and non-diegetic sound

There is excellent level of care distinguishing accents in character’s speech

There is an excellent description of the shot – what the camera sees including transitions.   For example, CUT TO…