Approximately 90 non-freshmen students live in Small Living Units (SLUs), which are co-ops united voluntarily to meet shared economic, social, and cultural needs and aspirations in democratically controlled houses. The houses allow students to live cooperatively with one another by sharing regularly scheduled house chores, participating in the decision process, and, in some, sharing the cooking duties. Each unit houses a group of 10–17 students, and is organized to promote a common theme, usually indicated by the co-op's name. As of the 2017–2018 academic year, the SLUs consist of The Peace and Justice House, The Citizens of the World House, The Sexuality and Gender Equality House, The House of Linguistic Diversity (HOLD), The House of Spiritual Athletes, The Tree House, and The Interfaith House. The University owns these houses; the co-ops, therefore, must follow the University's living policies. The co-ops do, however, elect their own members and do not have resident advisers or faculty in residence like other on-campus residence halls. They have a House Moderator who is selected by Residential Life and undergoes the same training as a resident advisor. At the end of each calendar year, every existing and potential co-op must submit a house proposal describing its plans for theme promotion for the next academic year. The University Housing office places co-ops in houses every year on a competitive basis. In addition the school offers Theme Houses, which do not have to go through the renewal process. They include the Honors House (HoHo) and House of Black Culture.