One.Charter High School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| CAHSEE | ||||||
| 2011 | English Language Arts | 10th Grade | % met std | 0% | 35.0% | 82.0% |
| 2012 | English Language Arts | 10th Grade | % met std | 59.0% | 32.0% | 83.0% |
| 2013 | English Language Arts | 10th Grade | % met std | 64.0% | 34.0% | 83.0% |
| 2011 | Math | 10th Grade | % met std | 0% | 30.0% | 83.0% |
| 2012 | Math | 10th Grade | % met std | 41.0% | 32.0% | 84.0% |
| 2013 | Math | 10th Grade | % met std | 54.0% | 41.0% | 84.0% |
| STAR | ||||||
| 2011 | English Language Arts Standards | 10th Grade | Mean Scaled Score | 284.8 | 272.4 | 346.4 |
| 2012 | English Language Arts Standards | 10th Grade | Mean Scaled Score | 280.4 | 269.6 | 348.4 |
| 2013 | English Language Arts Standards | 10th Grade | Mean Scaled Score | 290.3 | 278.9 | 352.4 |
| 2012 | Science | 10th Grade | Mean Scaled Score | 278.6 | 268.7 | 357.3 |
| 2013 | Science | 10th Grade | Mean Scaled Score | 288.5 | 283.0 | 360.4 |
| 2012 | English Language Arts Standards | 11th Grade | Mean Scaled Score | 285.7 | 261.6 | 344.7 |
| 2013 | English Language Arts Standards | 11th Grade | Mean Scaled Score | 288.2 | 264.6 | 344.8 |
| 2012 | U.S. History | 11th Grade | Mean Scaled Score | 275.4 | 262.1 | 346.9 |
| 2013 | U.S. History | 11th Grade | Mean Scaled Score | 281.8 | 266.4 | 348.5 |
| 2011 | English Language Arts Standards | 9th Grade | Mean Scaled Score | 307.8 | 291.8 | 357.7 |
| 2011 | General Mathematics | 9th Grade | Mean Scaled Score | 300.7 | 295.6 | 299.2 |
| 2013 | Algebra I | End of course | Mean Scaled Score | 279.1 | 277.1 | 334.1 |
| 2011 | General Mathematics | End of course | Mean Scaled Score | 298.1 | 292.1 | 316.8 |
| 2012 | World History | End of course | Mean Scaled Score | 251.6 | 252 | 345.7 |
Some data by SchoolDigger.com.
* One.Charter High School, Test Performance was rated 3.5 out of 5 by USA.com. The ranking was calculated based on publically available historical Math and English performance data.