| Mifflin School | |
| Location: | 808–818 N. Third St., Philadelphia, Pennsylvania |
| Coordinates: | 39.9639°N -75.143°W |
| Built: | 1825 |
| Added: | December 04, 1986 |
| Area: | less than one acre |
| Refnum: | 86003308 |
The Mifflin School, built in 1825, is the oldest surviving school building used in the Philadelphia public school system. It is a two-story, two-bay red brick building, which now has its side walls stuccoed over. In the first phase of the development of the public school system in Philadelphia, 1818–1850, simple school buildings were built by local authorities in a decentralized system. During this period 49 buildings were built by seven local school boards; only four of the buildings survive.[1]