Saint Viator High School is a private Roman Catholic co-educational secondary school run by the Clerics of Saint Viator in Arlington Heights, Illinois. It was founded by Father Louis Querbes and opened in 1961 to serve as a college-preparatory school for students from the northwest suburbs of Chicago, which is part of the Archdiocese of Chicago. History The Archdiocese of Chicago reallocated some land it had already owned — tentatively designated for a future cemetery — for educational purposes, and assigned the Clerics of St. Viator to build and run a boys' secondary school. It opened in 1961 to a small class of freshmen and a few sophomores, graduating its first class in 1965. Enrollments waxed and waned over the next few decades. Faced with declining numbers in 1987, the choice was made to merge with Sacred Heart of Mary High School of Rolling Meadows, with which Saint Viator already had a sister school relationship. The merger occurred in the summer of 1987; Saint Viator absorbed the faculty, staff, and student body of Sacred Heart beginning with the 1987–88 school year, and admitted a co-educational freshman class (the class of 1991). The physical plant remained largely unchanged from its original 1961 footprint. A co-educational student population required the construction of a girls' locker room. This kicked off a string of renovations to occur throughout the 1990s, including a renovation of the boys' locker room, the chapel, and science labs. After a major capital campaign, the school constructed a multipurpose athletic addition, and the Boler Center was dedicated in summer of 2005. In 2014, the Marie Gallagher Academic Commons was dedicated and in 2015 Fr. Louis Querbes Hall and the new fine arts facilities were dedicated. Controversy Since 2007, Saint Viator High School has used hair samples to test each of its 1,000 students for drugs in the fall and then conduct random screens during the rest of the school year. Starting in 2013, the school will also test for alcohol. Private schools have broader legal authority to test students for illegal substances than their public counterparts. And while a few area public high schools do conduct drug testing, the practice is limited to teens in sports or other extracurricular activities. Yet even among private schools, testing students' hair for alcohol use appears to be particularly rare. The testing company, Massachusetts-based Psychemedics Corp., said Saint Viator is among a handful nationwide