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Langdon Ec Primary School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| DC CAS | ||||||
| 2010 | Math | 3rd Grade | % met std | 98% | N/A | 37.61% |
| 2011 | Math | 3rd Grade | % met std | 84.32% | N/A | 35.92% |
| 2010 | Reading | 3rd Grade | % met std | 76.47% | N/A | 41.79% |
| 2011 | Reading | 3rd Grade | % met std | 88.24% | N/A | 41.51% |
| 2010 | Math | 4th Grade | % met std | 56.82% | N/A | 45.66% |
| 2011 | Math | 4th Grade | % met std | 73.34% | N/A | 46.01% |
| 2010 | Reading | 4th Grade | % met std | 59.1% | N/A | 45.46% |
| 2011 | Reading | 4th Grade | % met std | 75.56% | N/A | 44.03% |
| 2010 | Math | 5th Grade | % met std | 64.29% | N/A | 45.2% |
| 2011 | Math | 5th Grade | % met std | 71.88% | N/A | 45% |
| 2010 | Reading | 5th Grade | % met std | 85.71% | N/A | 46.24% |
| 2011 | Reading | 5th Grade | % met std | 68.75% | N/A | 46.05% |
| 2010 | Math | 6th Grade | % met std | 55.55% | N/A | 43.78% |
| 2011 | Math | 6th Grade | % met std | 40% | N/A | 45.84% |
| 2010 | Reading | 6th Grade | % met std | 51.85% | N/A | 41.93% |
| 2011 | Reading | 6th Grade | % met std | 47.5% | N/A | 43.02% |
| 2010 | Math | 7th Grade | % met std | 78.26% | N/A | 52.47% |
| 2011 | Math | 7th Grade | % met std | 59.26% | N/A | 56.7% |
| 2010 | Reading | 7th Grade | % met std | 47.82% | N/A | 48.43% |
| 2011 | Reading | 7th Grade | % met std | 44.44% | N/A | 48.96% |
| 2010 | Math | 8th Grade | % met std | 69.56% | N/A | 50.24% |
| 2011 | Math | 8th Grade | % met std | 80% | N/A | 58.44% |
| 2010 | Reading | 8th Grade | % met std | 65.22% | N/A | 48.43% |
| 2011 | Reading | 8th Grade | % met std | 36.66% | N/A | 49.62% |
Some data by SchoolDigger.com.
* Langdon Ec Primary School, Test Performance was rated 4 out of 5 by USA.com. The ranking was calculated based on publically available historical Math and English performance data.