Applicants who went to the same highschool but have different grading scale on their school report

It is real. It is an international school. The school doesn’t usually have students applying abroad so one student manuiplated the grading scale to make his grade flourish and it was submitted for him through counselor account t on common app while the other student had the school’s orginal grading scale reported to colleges by his counselor. This two kids are now applying to the same school. Will colleges notice that?