Istanbul University, the biggest and oldest university in Turkey, administers the International Student Exam (IUYOS) in Turkey and abroad to place both foreign and Turkish students who completed high school abroad on undergraduate and associate degree programs. The quota for international students is limited and is determined by the Turkish Higher Education Institution (YÖK). According to their examination results, students are eligible to enrol at Istanbul University and many other universities across Turkey. In this sense, IUYOS can be considered as a placement exam.

In 2014, more than 6,000 candidates took Istanbul University's International Student Examination (IUYOS) both in Istanbul and in 13 centres around the world. The results of this examination are accepted not only by Istanbul University but also by 93 public and private universities throughout Turkey. In 2015 the IUYOS examination is scheduled to be held in the cities of Turkey Istanbul, Erzurum, Van, Gaziantep and abroad; Almaty, Amman, Ashgabat, Athens, Komotini, Baku, Berlin, Cologne, Bern, Beirut, Bishkek, Cape Town, Dubai, Erbil, Islamabad, Kabul, Cairo, Kuala Lumpur, Khartoum, Paris, Prishtina, Riyadh, Jeddah, Sanaa'a, Sarajevo, Tehran, Tbilisi, Skopje and Washington DC. The examination will be administered in all of the test centres on 16 May 2015 by Istanbul University officials and will be conducted in both Turkish and English.

Detailed information about the IUYOS 2015 is available at
http://yos.istanbul.edu.tr/en/.