The district is a member of the South Iowa Cedar League conference.

In 1958, the school district consolidated and expanded to incorporate adjacent rural areas and changed the name from Marengo to Iowa Valley (based on the adjacent Iowa River).

In 1972, a gymnasium, band/vocal music room and two science classrooms were added to the west end of the building.

[2] The Tigers compete in the South Iowa Cedar League Conference in the following sports.

[14] The Tigers won the 1985 State Championship in Class 2A Boys' Track and Field, winning six events (110m hurdles, long jump, 400m hurdles, 1600m run, 3200m run, and the 1600m medley relay) with five athletes.