 The year 1867 saw the first graduating class from Decatur High School, which consisted of four girls who had completed the three-year course of study.The first official High School building opened on the northwest corner of East North and North Broadway Streets in the fall of 1869 (today Broadway Street is known as Martin Luther King (MLK) Drive).A class of eight graduated in 1870, but there were no graduates in 1871, because the course of study was lengthened to four years.