| Year | Test | Grade | Measurement | Score | School District | State Average |
| NECAP | ||||||
| 2006 | Mathematics | 3rd Grade | % met std | 88% | 79% | N/A |
| 2007 | Mathematics | 3rd Grade | % met std | 86% | 79% | N/A |
| 2008 | Mathematics | 3rd Grade | % met std | 84% | 84% | N/A |
| 2009 | Mathematics | 3rd Grade | % met std | 88% | 80% | N/A |
| 2010 | Mathematics | 3rd Grade | % met std | 76% | 81% | N/A |
| 2011 | Mathematics | 3rd Grade | % met std | 80% | 80% | N/A |
| 2012 | Mathematics | 3rd Grade | % met std | 78% | 77% | N/A |
| 2013 | Mathematics | 3rd Grade | % met std | 89% | 82% | N/A |
| 2006 | Reading | 3rd Grade | % met std | 87% | 81% | N/A |
| 2007 | Reading | 3rd Grade | % met std | 82% | 81% | N/A |
| 2008 | Reading | 3rd Grade | % met std | 91% | 82% | N/A |
| 2009 | Reading | 3rd Grade | % met std | 93% | 83% | N/A |
| 2010 | Reading | 3rd Grade | % met std | 86% | 85% | N/A |
| 2011 | Reading | 3rd Grade | % met std | 87% | 79% | N/A |
| 2012 | Reading | 3rd Grade | % met std | 89% | 81% | N/A |
| 2013 | Reading | 3rd Grade | % met std | 84% | 79% | N/A |
| 2006 | Mathematics | 4th Grade | % met std | 77% | 70% | N/A |
| 2007 | Mathematics | 4th Grade | % met std | 95% | 75% | N/A |
| 2008 | Mathematics | 4th Grade | % met std | 82% | 74% | N/A |
| 2009 | Mathematics | 4th Grade | % met std | 87% | 82% | N/A |
| 2010 | Mathematics | 4th Grade | % met std | 89% | 75% | N/A |
| 2011 | Mathematics | 4th Grade | % met std | 72% | 80% | N/A |
| 2012 | Mathematics | 4th Grade | % met std | 94% | 78% | N/A |
| 2013 | Mathematics | 4th Grade | % met std | 91% | 77% | N/A |
| 2006 | Reading | 4th Grade | % met std | 80% | 77% | N/A |
| 2007 | Reading | 4th Grade | % met std | 81% | 80% | N/A |
| 2008 | Reading | 4th Grade | % met std | 78% | 77% | N/A |
| 2009 | Reading | 4th Grade | % met std | 76% | 77% | N/A |
| 2010 | Reading | 4th Grade | % met std | 78% | 76% | N/A |
| 2011 | Reading | 4th Grade | % met std | 80% | 84% | N/A |
| 2012 | Reading | 4th Grade | % met std | 84% | 80% | N/A |
| 2013 | Reading | 4th Grade | % met std | 87% | 80% | N/A |
| 2006 | Mathematics | 5th Grade | % met std | 77% | 75% | N/A |
| 2007 | Mathematics | 5th Grade | % met std | 89% | 80% | N/A |
| 2008 | Mathematics | 5th Grade | % met std | 98% | 81% | N/A |
| 2009 | Mathematics | 5th Grade | % met std | 85% | 79% | N/A |
| 2010 | Mathematics | 5th Grade | % met std | 83% | 81% | N/A |
| 2011 | Mathematics | 5th Grade | % met std | 86% | 81% | N/A |
| 2012 | Mathematics | 5th Grade | % met std | 78% | 86% | N/A |
| 2013 | Mathematics | 5th Grade | % met std | 77% | 78% | N/A |
| 2006 | Reading | 5th Grade | % met std | 82% | 80% | N/A |
| 2007 | Reading | 5th Grade | % met std | 79% | 77% | N/A |
| 2008 | Reading | 5th Grade | % met std | 81% | 79% | N/A |
| 2009 | Reading | 5th Grade | % met std | 76% | 80% | N/A |
| 2010 | Reading | 5th Grade | % met std | 79% | 82% | N/A |
| 2011 | Reading | 5th Grade | % met std | 73% | 81% | N/A |
| 2012 | Reading | 5th Grade | % met std | 82% | 84% | N/A |
| 2013 | Reading | 5th Grade | % met std | 83% | 82% | N/A |
| 2006 | Writing | 5th Grade | % met std | 78% | 76% | N/A |
| 2007 | Writing | 5th Grade | % met std | 74% | 65% | N/A |
| 2008 | Writing | 5th Grade | % met std | 67% | 62% | N/A |
| 2009 | Writing | 5th Grade | % met std | 72% | 68% | N/A |
| 2011 | Writing | 5th Grade | % met std | 52% | 65% | N/A |
| 2012 | Writing | 5th Grade | % met std | 50% | 61% | N/A |
| 2013 | Writing | 5th Grade | % met std | 69% | 65% | N/A |
Some data by SchoolDigger.com.
* William E. Lancaster School, Test Performance was rated 4.5 out of 5 by USA.com. The ranking was calculated based on publically available historical Math and English performance data.