Colchester High School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| NECAP | ||||||
| 2007 | Mathematics | 11th Grade | % met std | 24% | 24% | 29% |
| 2008 | Mathematics | 11th Grade | % met std | 32% | 32% | 34% |
| 2009 | Mathematics | 11th Grade | % met std | 40% | 40% | 34% |
| 2010 | Mathematics | 11th Grade | % met std | 54% | 54% | 37% |
| 2011 | Mathematics | 11th Grade | % met std | 50% | 50% | 36% |
| 2012 | Mathematics | 11th Grade | % met std | 54% | 54% | 37% |
| 2007 | Reading | 11th Grade | % met std | 67% | 67% | 66% |
| 2008 | Reading | 11th Grade | % met std | 74% | 74% | 70% |
| 2009 | Reading | 11th Grade | % met std | 73% | 73% | 69% |
| 2010 | Reading | 11th Grade | % met std | 85% | 85% | 71% |
| 2011 | Reading | 11th Grade | % met std | 86% | 86% | 72% |
| 2012 | Reading | 11th Grade | % met std | 84% | 84% | 73% |
| 2008 | Science | 11th Grade | % met std | 24% | 24% | 25% |
| 2009 | Science | 11th Grade | % met std | 29% | 29% | 26% |
| 2010 | Science | 11th Grade | % met std | 29% | 29% | 27% |
| 2011 | Science | 11th Grade | % met std | 43% | 43% | 29% |
| 2012 | Science | 11th Grade | % met std | 51% | 51% | 32% |
| 2007 | Writing | 11th Grade | % met std | 42% | 42% | 37% |
| 2008 | Writing | 11th Grade | % met std | 30% | 30% | 42% |
| 2009 | Writing | 11th Grade | % met std | 56% | 56% | 49% |
| 2010 | Writing | 11th Grade | % met std | 60% | 60% | 49% |
| 2011 | Writing | 11th Grade | % met std | 68% | 68% | 46% |
| 2012 | Writing | 11th Grade | % met std | 65% | 65% | 45% |
Some data by SchoolDigger.com.
* Colchester High 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.