Jackson Grammar School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| NECAP | ||||||
| 2007 | Mathematics | 3rd Grade | % met std | 83% | 83% | 69% |
| 2011 | Mathematics | 3rd Grade | % met std | 91% | 91% | 76% |
| 2007 | Reading | 3rd Grade | % met std | 75% | 75% | 75% |
| 2011 | Reading | 3rd Grade | % met std | 91% | 91% | 80% |
| 2008 | Mathematics | 4th Grade | % met std | 92% | 92% | 68% |
| 2012 | Mathematics | 4th Grade | % met std | 100% | 100% | 76% |
| 2008 | Reading | 4th Grade | % met std | 85% | 85% | 74% |
| 2012 | Reading | 4th Grade | % met std | 100% | 100% | 79% |
| 2009 | Mathematics | 5th Grade | % met std | 100% | 100% | 73% |
| 2013 | Mathematics | 5th Grade | % met std | 92% | 92% | 74% |
| 2009 | Reading | 5th Grade | % met std | 91% | 91% | 76% |
| 2013 | Reading | 5th Grade | % met std | 92% | 92% | 77% |
| 2009 | Writing | 5th Grade | % met std | 50% | 50% | 60% |
| 2013 | Writing | 5th Grade | % met std | 50% | 50% | 58% |
| 2010 | Mathematics | 6th Grade | % met std | 92% | 92% | 72% |
| 2010 | Reading | 6th Grade | % met std | 91% | 91% | 76% |
Some data by SchoolDigger.com.
* Jackson Grammar School, Test Performance was rated 5 out of 5 by USA.com. The ranking was calculated based on publically available historical Math and English performance data.