The test scores from the IBA mathematics exam (e.g. OMPT-A) and English tests (e.g. IELTS, TOEFL) are not used in the ranking. This means that higher scores for the mathematics exam and the English test will not increase your chances of a higher rank. 

These tests are used to show the admissions office that you have a sufficient proficiency in English and Maths to start the IBA programme. The ranking is based solely on achieved high school grades and your answers to the motivation questions.