Delta High School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| ECA | ||||||
| 2010 | Algebra I | End of course | % met std | 71% | 79% | 61% |
| 2011 | Algebra I | End of course | % met std | 73.3% | 79.7% | 72.4% |
| 2012 | Algebra I | End of course | % met std | 79.4% | 84.4% | N/A |
| 2010 | Biology I | End of course | % met std | 31% | 31% | 37% |
| 2011 | Biology I | End of course | % met std | 42.1% | 42.1% | 46.9% |
| 2012 | Biology I | End of course | % met std | 46.9% | 46.9% | N/A |
| 2010 | English 10 | End of course | % met std | 70% | 70% | 63% |
| 2011 | English 10 | End of course | % met std | 70.5% | 70.5% | 71.9% |
| 2012 | English 10 | End of course | % met std | 79.8% | 79.8% | N/A |
| ISTEP+ | ||||||
| 2005 | English/Language Arts | 10th Grade | % met std | 78% | 78% | 68% |
| 2006 | English/Language Arts | 10th Grade | % met std | 78% | 78% | 68% |
| 2007 | English/Language Arts | 10th Grade | % met std | 74% | 74% | 67% |
| 2008 | English/Language Arts | 10th Grade | % met std | 76% | 76% | 68% |
| 2009 | English/Language Arts | 10th Grade | % met std | 69% | 69% | 67% |
| 2005 | Math | 10th Grade | % met std | 71% | 71% | 64% |
| 2006 | Math | 10th Grade | % met std | 62% | 62% | 64% |
| 2007 | Math | 10th Grade | % met std | 67% | 67% | 65% |
| 2008 | Math | 10th Grade | % met std | 75% | 75% | 66% |
| 2009 | Math | 10th Grade | % met std | 71% | 71% | 65% |
| 2005 | English/Language Arts | 9th Grade | % met std | 71% | 71% | 66% |
| 2006 | English/Language Arts | 9th Grade | % met std | 75% | 75% | 67% |
| 2007 | English/Language Arts | 9th Grade | % met std | 79% | 79% | 68% |
| 2008 | English/Language Arts | 9th Grade | % met std | 70% | 70% | 66% |
| 2005 | Math | 9th Grade | % met std | 71% | 71% | 68% |
| 2006 | Math | 9th Grade | % met std | 74% | 74% | 71% |
| 2007 | Math | 9th Grade | % met std | 78% | 78% | 67% |
| 2008 | Math | 9th Grade | % met std | 75% | 75% | 70% |
Some data by SchoolDigger.com.
* Delta High 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.