Plainfield High School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| ECA | ||||||
| 2010 | Algebra I | End of course | % met std | 75% | 83% | 61% |
| 2011 | Algebra I | End of course | % met std | 87.8% | 90.8% | 72.4% |
| 2012 | Algebra I | End of course | % met std | 87.2% | 91.6% | N/A |
| 2010 | Biology I | End of course | % met std | 57% | 66% | 37% |
| 2011 | Biology I | End of course | % met std | 58.8% | 67.3% | 46.9% |
| 2012 | Biology I | End of course | % met std | 54.1% | 63.3% | N/A |
| 2010 | English 10 | End of course | % met std | 65% | 65% | 63% |
| 2011 | English 10 | End of course | % met std | 86.8% | 86.8% | 71.9% |
| 2012 | English 10 | End of course | % met std | 89.5% | 89.5% | N/A |
| ISTEP+ | ||||||
| 2005 | English/Language Arts | 10th Grade | % met std | 80% | 80% | 68% |
| 2006 | English/Language Arts | 10th Grade | % met std | 79% | 79% | 68% |
| 2007 | English/Language Arts | 10th Grade | % met std | 80% | 80% | 67% |
| 2008 | English/Language Arts | 10th Grade | % met std | 81% | 81% | 68% |
| 2009 | English/Language Arts | 10th Grade | % met std | 81% | 81% | 67% |
| 2005 | Math | 10th Grade | % met std | 85% | 85% | 64% |
| 2006 | Math | 10th Grade | % met std | 80% | 80% | 64% |
| 2007 | Math | 10th Grade | % met std | 80% | 80% | 65% |
| 2008 | Math | 10th Grade | % met std | 83% | 83% | 66% |
| 2009 | Math | 10th Grade | % met std | 81% | 81% | 65% |
| 2005 | English/Language Arts | 9th Grade | % met std | 83% | 83% | 66% |
| 2006 | English/Language Arts | 9th Grade | % met std | 84% | 84% | 67% |
| 2007 | English/Language Arts | 9th Grade | % met std | 83% | 83% | 68% |
| 2008 | English/Language Arts | 9th Grade | % met std | 81% | 81% | 66% |
| 2005 | Math | 9th Grade | % met std | 87% | 87% | 68% |
| 2006 | Math | 9th Grade | % met std | 86% | 86% | 71% |
| 2007 | Math | 9th Grade | % met std | 86% | 86% | 67% |
| 2008 | Math | 9th Grade | % met std | 81% | 81% | 70% |
Some data by SchoolDigger.com.
* Plainfield 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.