stuck on common app help pls

in the grades section of the common app where it says
class rank reporting
Graduating class size (approx.)
cumulative GPA
GPA scale
GPA weighting

1.how do people know their class size?
2. dont have anything like a gpa (not on the school transcript and stuff) bc i do the british cirriculum so what do i put in the gpa box? leave it empty?

You don’t know how many kids are in your class?

You don’t know what your grades are and have been for the last four years?

@MotherOfDragons no and yes

how am i supposed to know i dont go to school to count people…
also, its not given anywhere…?

Ok, I understand. Here in the US there are stats about each school that you can find online, so it’s fairly easy to find the class size.

@VickiSoCal 's daughter is applying to British schools from the US, so she should be able to help you (hopefully she’ll chime in here).

Do you have guidance counselors at your school like we have here? If so, they should have all those numbers you’re looking for.

I don’t know, I’m in the reverse, US to UK so I may not be much help.

Can you put N/A then in the extra info section put the grades and scores you do get at your school? Like your GSCE’s and predicted scores for your A levels?