Key ES vs Mann ES
A head-to-head comparison of two elementary schools in District of Columbia, United States, 1.4 km apart, using official American 2025 data. The better value in each row is highlighted.
Key ES
Washington · Public elementary · Grades PK–5
337 students
Mann ES
Washington · Public elementary · Grades PK–5
397 students
| Measure | Key ES Washington, District of Columbia | Mann ES Washington, District of Columbia |
|---|---|---|
| Success Index (US) | 89 Top 5% | 88 Top 5% |
| State rank | #5 of 142 | #6 of 142 |
| National rank | #1123 of 50,301 | #1361 of 50,301 |
| Sector | Public | Public |
| Type | Elementary | Elementary |
| Year range | Grades PK–5 | Grades PK–5 |
| Students | 337 | 397 |
| Enrollment | 337 | 397 |
| Free/reduced-price lunch | – | – |
| Students per teacher | 13.0 | 12.4 |
| Reading proficiency | 77% | 82% |
| Math proficiency | 82% | 72% |
| city | Washington | Washington |
| state | District of Columbia | District of Columbia |
| Website | – | – |
The verdict
- •Both schools have almost identical Success Index (US) scores (88.6 vs 87.8).
- •Key ES does better on math proficiency (82% vs 72%).
- •Mann ES does better on reading proficiency (82% vs 77%).
- •Mann ES does better on students per teacher (12.4 vs 13.0).
- •Mann ES is the larger school with 397 students compared with 337.
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 Key ES better than Mann ES?
The two schools are very close on the Success Index (US). Differences in sector, size, programmes and distance from home will matter more than the score.
How far apart are Key ES and Mann ES?
About 1.4 km in a straight line, between Washington and Washington in District of Columbia.
Which has the better Enrollment?
Key ES: 337. Mann ES: 397. Students enrolled in the latest NCES directory year.
How do Key ES and Mann ES rank in District of Columbia?
Key ES is 5th of 142 and Mann ES is 6th of 142 among elementary schools in District of Columbia on the 2025 Success Index (US).