Compare public schools
| Fact | Building 21 Allentown Remove | Louis E Dieruff HS Remove |
|---|---|---|
| School district | Allentown City SD | Allentown City SD |
| Location | Allentown, Pennsylvania | Allentown, Pennsylvania |
| School level | High | High |
| Grades | 09–12 | 09–12 |
| Students enrolled | 415 | 1,914 |
| Classroom teachers (FTE) | 26 | 115 |
| Students per teacher | 16.0:1 | 16.6:1 |
| School type | Regular | Regular |
| Charter school | No | No |
| Virtual (online) school | No | No |
| Magnet status | Whole-school magnet (2021-22 federal civil rights data) | Not reported |
| Title I status | Title I schoolwide school (2021-22) | Title I schoolwide school (2021-22) |
| Phone | (484) 765-4400 | (484) 765-5501 |
| Address | 265 Lehigh St, Allentown PA 18102 | 815 N Irving St, Allentown PA 18109 |
| NCES data year | 2024-25 | 2024-25 |
Source: National Center for Education Statistics (NCES) Common Core of Data. Facts as reported; schools are not ranked or rated.