Brigham Young University (BYU) is often called “The Y” and is a private research university. The Church of Jesus Christ of Latter-day Saints (LDS Church) owns and runs the school. It is the biggest church school and third biggest private university in the United States with 33,511 students. About 99 percent of the students are part of the LDS Church, and 32% of them are from Utah. BYU students have to live an honor code, a set of rules on behavior. They must be honest in their work, follow dress rules, have no sex outside of marriage, and not take illegal drugs or drink alcohol. 66% of students (88 percent of men, 39 percent of women) start school late or take a break from school to be Mormon missionaries. It is cheaper to study at BYU than at other private universities because most of the cost of attending BYU is paid for by the LDS church.