The series primarily makes use of Vocaloids, a series of singing synthesizer software, and the songs created using these Vocaloids most notably the virtual-diva Vocaloid Hatsune Miku. The game is the first video game to utilize the Vocaloid software developed by the Yamaha Corporation.
Middle schools, or junior high schools, are schools that span grades 7, 8, and sometimes 5, 6 and 9, which straddle primary and secondary education. Upon arrival in middle school or junior high school, students begin to enroll in class schedules where they take classes from several teachers in a given day.
In most jurisdictions, secondary education in the United States refers to the last four years of statutory formal education (grade nine through grade twelve) either at high school or split between a final year of 'junior high school' and three in high school. 1 History.