This is a revised version of my original script which also contains feedback.

1. SCENE ONE:
Ext. STREET. Day
En route to school, JAMES PETERS casually walks towards a shop to
purchase some sweets but is then confronted by a man just outside
the shop.
Interested in the sweets,
JAMES PETERS
How much?
(In a deep crusty voice)
STRANGE MAN
Av' em fo' free, mate.
MUCH BETTER
(JAMES with a surprised look takes the sweets)
As he puts the sweets in his bag; he looks for the STRANGE MAN to
thank him, but realises he is no longer there. Not making much of
it, he looks at his watch and realises that he is getting late for
school, and swiftly breaks into a run.
END SCENE.

2. SCENE TWO pt.1
Int. SCHOOL. Day
After JAMES has finished his lunch, he opens up his bag
and pulls out the sweets and eats one. After he takes a
bite of the sweet he feels a sharp cold sensation in which
he reacts.
(SHARPLY)
JAMES
That's freezing cold.
As he says that word, the remaining people in the lunch
hall are now frozen still.
James then looks up and strangely sees that people have
now stopped moving, he moves over to a person to inspect
what has happened to them, constantly poking as he does
so.
JAMES:
Hello...Mate? (Poking them as he does so.)