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.