lop 5a co 32 ban , cuoi hoc ki 1 ca lop co 8 ban uoc xep loai gioi , 16 ban xep loai kha , con lai xep loai trung binh . hoi a so ban xep loai gioi chiem bao nhieu phan tram so voi ca lop . b so ban xep loai kha chiem bao nhieu phan tram so voi ban ca lop