The following are the oldest public high schools in the United States that are still in operation. While some of these schools have operated as private schools in the past, all are currently public schools. The list does not include schools that have closed or consolidated with another school to form a new institution. The list is ordered by date of creation, and currently includes schools formed before 1870.
^ abcdeAnnual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1761.
^Fred Lanfear, Oxford, Charleston, S.C., Arcadia Publishing, 2011, p. 71.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1810.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1705.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1812.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1764.
^Simon Goodell Griffin;, et al., A history of the town of Keene from 1732, when the township was granted by Massachusetts, to 1874, when it became a city., Keene, N.H., Sentinel Print. Co., 1904, p. 404.
^ abAnnual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1763.
^Newburyport High School, The Clipper's Compass: A Student Handbook, 65th ed.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1714.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1767.
^Mollie Hollifield, Auburn: Lovliest Village of the Plain (S.l.: s.n., 1955), 72; "Auburn Town Lots for Sale", Columbus Enquirer, December 22, 1836; "To the Public.", Columbus Enquirer, February 22, 1838.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1815.
^ abcdeInglis, Alexander James (1911). The Rise of the High School in Massachusetts, Columbia University, p. 97. PPA97,M1
^ abAnnual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1765.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1758.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1760.
^ abcAnnual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1762.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1851.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1759.
^ abAnnual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1809.
^Dabney, Edgar Robert, The Settlement of New Braunfels and the History of Its Earlier Schools, University of Texas, 1927.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1868.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1755.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1768.
^Annual reports of the Department of the Interior for the fiscal year ended June 30, 1902. Report of the Commissioner of Education. Volume 2., Washington, D.C., U.S. Government Printing Office, p. 1775.