Grindstone Island Upper Schoolhouse

	Grindstone Island Upper Schoolhouse
	U.S. National Register of Historic Places
	Location within New York Location within the United States
Location	41591 Cross Island Rd., on Grindstone Island, Clayton, New York
Coordinates	44°16′12″N 76°07′45″W / 44.27000°N 76.12917°W
Area	Less than 1 acre (0.40 ha)
Built	1885
NRHP reference No.	12000509
Added to NRHP	August 14, 2012

Grindstone Island Upper Schoolhouse is a historic one-room school building located on Grindstone Island, Clayton, Jefferson County, New York. It was built in 1885, and is a 1 1/2-story, three bay by one bay, frame building on a granite foundation. The building includes a vestibule and small teachers apartment. Also on the property is a contributing well pump. It operated until 1989, making it the last one-room school in operation in New York State.^[2]^: 5–6

It was added to the National Register of Historic Places in 2012.^[1]

References

1 2 "National Register of Historic Places" (PDF). Weekly List of Actions Taken on Properties: 8/13/12 through 8/17/12. National Park Service. August 24, 2012.
↑ Travis Bowman (May 2012). National Register of Historic Places Registration: New York SP Grindstone Island Upper Schoolhouse. National Archives and Records Administration. Retrieved November 1, 2025. (Downloading may be slow.)

[nps-1] 1 2 "National Register of Historic Places" (PDF). Weekly List of Actions Taken on Properties: 8/13/12 through 8/17/12. National Park Service. August 24, 2012.

[nrhpdoc-2] Travis Bowman (May 2012). National Register of Historic Places Registration: New York SP Grindstone Island Upper Schoolhouse. National Archives and Records Administration. Retrieved November 1, 2025. (Downloading may be slow.)

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[2]

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