Building 21 Allentown vs Louis E Dieruff HS
A head-to-head comparison of two high schools in Pennsylvania, United States, 3.4 km apart, using official American 2025 data. The better value in each row is highlighted.
Building 21 Allentown
Allentown · Public high · Grades 9–12
415 students
Louis E Dieruff HS
Allentown · Public high · Grades 9–12
1,914 students
| Measure | Building 21 Allentown Allentown, Pennsylvania | Louis E Dieruff HS Allentown, Pennsylvania |
|---|---|---|
| Success Index (US) | 16 Lower 50% | 29 Lower 50% |
| State rank | #585 of 618 | #533 of 618 |
| National rank | #15905 of 16,910 | #13606 of 16,910 |
| Sector | Public | Public |
| Type | High | High |
| Year range | Grades 9–12 | Grades 9–12 |
| Students | 415 | 1,914 |
| Enrollment | 415 | 1,914 |
| Free/reduced-price lunch | 99% | 98.5% |
| Students per teacher | 16.0 | 16.6 |
| Reading proficiency | 27% | 44% |
| Math proficiency | 17% | 32% |
| city | Allentown | Allentown |
| state | Pennsylvania | Pennsylvania |
| Website | – | – |
The verdict
- •Louis E Dieruff HS scores higher on the Success Index (US) (28.8 vs 16.1).
- •Louis E Dieruff HS does better on math proficiency (32% vs 17%).
- •Louis E Dieruff HS does better on reading proficiency (44% vs 27%).
- •Louis E Dieruff HS does better on community advantage (fewer free/reduced-price lunch) (98.5% vs 99%).
- •Building 21 Allentown does better on students per teacher (16.0 vs 16.6).
- •Louis E Dieruff HS is the larger school with 1,914 students compared with 415.
The Success Index (US) summarises published results and context from official data. It does not measure teaching quality or fit. Methodology.
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Frequently asked questions
Is Building 21 Allentown better than Louis E Dieruff HS?
On the Success Index (US), Louis E Dieruff HS ranks higher (28.8 vs 16.1 out of 100). The index is built from published results and context data, not from teaching quality or fit, so visit both schools before deciding.
How far apart are Building 21 Allentown and Louis E Dieruff HS?
About 3.4 km in a straight line, between Allentown and Allentown in Pennsylvania.
Which has the better Enrollment?
Building 21 Allentown: 415. Louis E Dieruff HS: 1,914. Students enrolled in the latest NCES directory year.
How do Building 21 Allentown and Louis E Dieruff HS rank in Pennsylvania?
Building 21 Allentown is 585th of 618 and Louis E Dieruff HS is 533rd of 618 among high schools in Pennsylvania on the 2025 Success Index (US).