The Island School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| FCAT | ||||||
| 2011 | Math | 3rd Grade | Mean Scaled Score | 378 | 343 | 337 |
| 2011 | Reading | 3rd Grade | Mean Scaled Score | 353 | 320 | 314 |
| 2008 | Math | 4th Grade | Mean Scaled Score | 314 | 320 | 324 |
| 2009 | Math | 4th Grade | Mean Scaled Score | 321 | 329 | 330 |
| 2011 | Math | 4th Grade | Mean Scaled Score | 336 | 332 | 331 |
| 2008 | Reading | 4th Grade | Mean Scaled Score | 325 | 320 | 319 |
| 2009 | Reading | 4th Grade | Mean Scaled Score | 337 | 328 | 324 |
| 2011 | Reading | 4th Grade | Mean Scaled Score | 341 | 327 | 323 |
| 2009 | Math | 5th Grade | Mean Scaled Score | 350 | 336 | 335 |
| 2010 | Math | 5th Grade | Mean Scaled Score | 327 | 339 | 336 |
| 2009 | Reading | 5th Grade | Mean Scaled Score | 353 | 312 | 311 |
| 2010 | Reading | 5th Grade | Mean Scaled Score | 308 | 313 | 310 |
| 2009 | Science | 5th Grade | Mean Scaled Score | 343 | 313 | 314 |
| 2010 | Science | 5th Grade | Mean Scaled Score | 333 | 319 | 318 |
Some data by SchoolDigger.com.
* The Island School, Test Performance was rated 4 out of 5 by USA.com. The ranking was calculated based on publically available historical Math and English performance data.