K C Heffernan Elementary School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| NY State Assessments | ||||||
| 2006 | English Language Arts | 3rd Grade | % met std | 83% | 83% | 69% |
| 2007 | English Language Arts | 3rd Grade | % met std | 88% | 87% | 67% |
| 2008 | English Language Arts | 3rd Grade | % met std | 87% | 87% | 70% |
| 2009 | English Language Arts | 3rd Grade | % met std | 86% | 86% | 76% |
| 2010 | English Language Arts | 3rd Grade | % met std | 78% | 78% | 55% |
| 2011 | English Language Arts | 3rd Grade | % met std | 87% | 87% | 56% |
| 2012 | English Language Arts | 3rd Grade | % met std | 67% | 67% | 56% |
| 2013 | English Language Arts | 3rd Grade | % met std | 43.8% | 43.8% | 31.1% |
| 2006 | Math | 3rd Grade | % met std | 91% | 90% | 80% |
| 2007 | Math | 3rd Grade | % met std | 95% | 93% | 85% |
| 2008 | Math | 3rd Grade | % met std | 94% | 94% | 90% |
| 2009 | Math | 3rd Grade | % met std | 99% | 99% | 93% |
| 2010 | Math | 3rd Grade | % met std | 71% | 71% | 59% |
| 2011 | Math | 3rd Grade | % met std | 77% | 77% | 59% |
| 2012 | Math | 3rd Grade | % met std | 73% | 73% | 61% |
| 2013 | Math | 3rd Grade | % met std | 53.9% | 53.9% | 34.2% |
Some data by SchoolDigger.com.
* K C Heffernan Elementary 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.