The Washington Irving Graded School (Spanish: Escuela Washington Irving) is a historic school located in Adjuntas Pueblo, the historic and administrative center of the municipality of Adjuntas in central Puerto Rico.

The school was named after short-story writer Washington Irving, famous for works such as "Rip Van Winkle" (1819) and "The Legend of Sleepy Hollow" (1820).

[1] The 1903 school is a one-story, four-classroom, C-shaped, brick and masonry, Neoclassical flat-with-parapet-concrete-roofed building located one block southeast from the main town square of Adjuntas.

This is the oldest school building in Adjuntas and one of the oldest school buildings in Puerto Rico, in addition to being one of the educational institutions built under the United States administration in the island.

This article about a property in Puerto Rico on the National Register of Historic Places is a stub.