2.
Say they don't understand:
- Fours and fives? What do they mean? Are you a good pupil?
- Really? How old are you?
- I'm thirteen, too. But I'm in the seventh form. Sorry, I don' understand
Ask about meaning:
-What are your mark at school?
-I get fours and fives
- Yes, I am. 4 means good and 5 means excellent.
- Oh, well done! But in my culture they mean B and A
- What form are you in?
- I'm in the third form
- Thirteen
-Well, at most English schools forms start only at the secondary school, at the age of eleven.