If you think the SAT tests are tough, dont bother applying to the University of Al Azhar in Cairo, Egypt. Though the ancient school has been graduating students for more than a thousand years, the qualifying exam is far more challenging than any devised by the Educational Testing Service. Each year, every incoming freshman is required to recite the entire Koran from memory. The text of this Islamic holy book is nearly as long as the New Testament and takes three days to repeat. But every one of Al Azhars 20,000 students has passed the test.