Whittier is the District's oldest schoolhouse. When the Great Falls Public School District was only two months old, plans were begun for this schoolhouse. The land was donated by the Great Falls Water Tower. The north side school, located at Eighth Street and Third Avenue North, was officially named Whittier.

In 1892, two rooms were added to Whittier. By 1907 the tower had been removed from the building and a six room addition was built. 

In 1938 major construction began. They raised Whittier school and constructed a new schoolhouse on the original site. The new school was built by John Sletten, and completed by September of 1939.