The ACI Mathematics Department consists of both native English speaking faculty and Turkish bilingual faculty members. All faculty members are licensed professionals with the appropriate degrees from their home countries or from Turkey. The goal of the Math Department is to develop a student who is well prepared for the university examination with a solid background in mathematics enabling them to be successful throughout their university years with the appropriate degrees from their home countries or from Turkey. The goal of the Math Department is to develop a student who is well prepared for the university examination with a solid mathematics enabling them to be successful throughout their university years.

The Mathematics Department offers 11 international contests throughout the school year for students from different grade levels: the UK Senior Mathematics Challenge,the British Olympiad, the UK Intermediate Mathematics Challenge, the Grey Kangaroo Contest, the UK Cayley Olympiad ,the Canadian Open, the Canadian Senior, Fermat, Cayley, Pascal, Hypatia, Galois, Fryer and Euclid Contests from Canada .All of these contests are in English, and the students are not only tested for their mathematical comprehension, but also for their proficiency in the English language. The results and the students placement within these competitions provide our students with the opportunity to see how they compare with students and schools throughout the world.