Mifflin School
Why it's listed
Built in 1825, the Mifflin School in Philadelphia is recognized as the oldest surviving public school in the city. It dates from the first phase of Philadelphia's public school system, which ran from 1818 to 1850. During that period seven local school boards built forty-nine schools across Philadelphia County. Each of these early schools was small and simple in plan and design, with exteriors that were plain and utilitarian with little architectural decoration. The Mifflin School is regarded as the earliest surviving example of this school construction. Later uses have altered the building, but it still shows the simple plan and design of those early public schools. Its significance is tied to both architecture and education, since it documents how the city first provided public schooling.
Significance in brief: The nomination argues the building is the earliest surviving example of school construction from the first period of Philadelphia public school development, 1818 to 1850. It is said to still show the simple plan and design typical of early city public schools, although its architectural integrity has been compromised by later uses. Areas of significance are given as architecture and education.
Machine-generated summary. This summary was generated by a language model from the official nomination document and has not been reviewed line by line by an editor. It may contain errors. Check the source document before relying on any detail. Source: nomination document (PDF) · National Archives catalog entry. NRHP reference 86003308, listed December 4, 1986. Summary generated October 2026 (model claude-haiku-5-5, prompt v1.1-2026-10-29, confidence low).
Key facts
| Address | 808--818 N. Third St., Philadelphia |
|---|---|
| County | Philadelphia |
| Listed | December 4, 1986 |
| Reference number | 86003308 |
| Resource type | Building |
| Areas of significance | Education, Architecture |
| Level of significance | Local |
| Acreage | 0.9 |
| Coordinates | 39.96056, -75.84545 (NPS GIS) |
What listing means for this property
For a publicly owned building or structure, listing mainly matters when federal funds, permits or licences are involved: projects then go through Section 106 review so effects on the property are considered. Listing also strengthens applications for preservation grants and, for leased income-producing uses, can enable the federal rehabilitation tax credit.
General information, not legal or tax advice. Rules change; confirm with your State Historic Preservation Office or a qualified adviser.
Sources and further reading
- National Park Service, National Register of Historic Places database (snapshot May 2026), reference 86003308.
- Nomination form (PDF, National Archives) — catalog entry
- Wikipedia article (used for cross-checking only; text not reproduced here)
- Wikidata Q6844002
- This listing as JSON
Last updated October 2026. Found an error? See the editorial policy for how to report it.