The previous Nauvoo Elementary School opened in 1923. In 2001, Dallas City High School closed in
Dallas City. The Dallas City area was reassigned to Nauvoo-Colusa for high school, so that year 70 students and all but two of the Dallas City High teachers moved to Nauvoo-Colusa High School. The school's enrollment increased to 180 from 111, and all of the classrooms used as storage became active classrooms. The Dallas City district donated equipment to the Nauvoo-Colusa High School. In 2007, the Dallas City, High School Students, converged into the Illini West School District. In 2007, the Nauvoo-Colusa school district and the
Warsaw Community Unit School District 316 agreed to a plan in which Nauvoo-Colusa would close its high school and send its students to
Warsaw High School. In return the Warsaw district would close its junior high school and send its students to Nauvoo-Colusa Junior High School. On Tuesday February 12, 2008 voters in both districts approved the deactivation plans. High school students attended Nauvoo-Colusa High School from 1961 to 2008. In 2015, the elementary school moved to the Nauvoo-Colusa High School campus. The Nauvoo city government acquired the former Nauvoo Elementary school for $231,600, effective July 1, 2015. ==Boundary==