Emerson School is a historic building located in Waterloo, Iowa, United States.

The annex was built ten years later to accommodate the school's increased enrollment.

The original building is a two-story brick structure on a raised limestone basement designed in the Neoclassical style.

Typical of this style the annex features distinct horizontal divisions separated by belt and stringcourses.

This article about a property in Black Hawk County, Iowa on the National Register of Historic Places is a stub.