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Cosumnes River Elementary Primary School, Test Performance
| Year | Test | Grade | Measurement | Score | School District | State Average |
| STAR | ||||||
| 2004 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 385.7 | 351.1 | 330.5 |
| 2005 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 396.3 | 353 | 336.5 |
| 2006 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 399.1 | 358.1 | 344.3 |
| 2007 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 378 | 359.2 | 345 |
| 2008 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 400.8 | 359.6 | 348 |
| 2009 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 411.8 | 365.1 | 352.8 |
| 2010 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 408.1 | 369.2 | 356.6 |
| 2011 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 409.7 | 368.1 | 359.5 |
| 2012 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 412.1 | 368.9 | 361.5 |
| 2013 | English Language Arts Standards | 2nd Grade | Mean Scaled Score | 399.8 | 362.8 | 357.3 |
| 2004 | Mathematics | 2nd Grade | Mean Scaled Score | 412.6 | 378.6 | 358 |
| 2005 | Mathematics | 2nd Grade | Mean Scaled Score | 441.5 | 380.9 | 366 |
| 2006 | Mathematics | 2nd Grade | Mean Scaled Score | 441.7 | 383.4 | 372.5 |
| 2007 | Mathematics | 2nd Grade | Mean Scaled Score | 399.5 | 379 | 369.2 |
| 2008 | Mathematics | 2nd Grade | Mean Scaled Score | 439.7 | 383.2 | 372.4 |
| 2009 | Mathematics | 2nd Grade | Mean Scaled Score | 456.3 | 385.1 | 376.7 |
| 2010 | Mathematics | 2nd Grade | Mean Scaled Score | 434.4 | 388.4 | 381.6 |
| 2011 | Mathematics | 2nd Grade | Mean Scaled Score | 412.8 | 384.2 | 382.2 |
| 2012 | Mathematics | 2nd Grade | Mean Scaled Score | 447.2 | 385.4 | 382.7 |
| 2013 | Mathematics | 2nd Grade | Mean Scaled Score | 407.3 | 367.2 | 379.9 |
| 2004 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 369 | 338.9 | 321.5 |
| 2005 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 379.4 | 338 | 324.1 |
| 2006 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 400.4 | 343.3 | 330.8 |
| 2007 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 376 | 340.8 | 330 |
| 2008 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 380.3 | 339.4 | 332.8 |
| 2009 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 394.3 | 347.6 | 340.3 |
| 2010 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 374.5 | 349.7 | 342.2 |
| 2011 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 373 | 353.3 | 345.3 |
| 2012 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 391.7 | 350.5 | 347.1 |
| 2013 | English Language Arts Standards | 3rd Grade | Mean Scaled Score | 368.3 | 348.8 | 345.7 |
| 2004 | Mathematics | 3rd Grade | Mean Scaled Score | 425.8 | 374.8 | 353.1 |
| 2005 | Mathematics | 3rd Grade | Mean Scaled Score | 427.5 | 378.7 | 362.1 |
| 2006 | Mathematics | 3rd Grade | Mean Scaled Score | 435.9 | 381.1 | 368.9 |
| 2007 | Mathematics | 3rd Grade | Mean Scaled Score | 429.1 | 380.6 | 370.9 |
| 2008 | Mathematics | 3rd Grade | Mean Scaled Score | 416.5 | 384.4 | 379 |
| 2009 | Mathematics | 3rd Grade | Mean Scaled Score | 443.8 | 389.5 | 387.7 |
| 2010 | Mathematics | 3rd Grade | Mean Scaled Score | 439 | 393.2 | 395.4 |
| 2011 | Mathematics | 3rd Grade | Mean Scaled Score | 439.8 | 402.1 | 400.6 |
| 2012 | Mathematics | 3rd Grade | Mean Scaled Score | 412.4 | 394.3 | 399.2 |
| 2013 | Mathematics | 3rd Grade | Mean Scaled Score | 423.1 | 391.5 | 399.0 |
| 2004 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 372.8 | 353.8 | 338.5 |
| 2005 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 370 | 356.9 | 346.2 |
| 2006 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 366.3 | 362.3 | 351.1 |
| 2007 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 393.5 | 362.7 | 353.2 |
| 2008 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 382.5 | 365.4 | 357.8 |
| 2009 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 396.5 | 373.9 | 366.8 |
| 2010 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 403.2 | 375 | 369.9 |
| 2011 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 398.7 | 374.8 | 371.6 |
| 2012 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 403 | 380.2 | 375.2 |
| 2013 | English Language Arts Standards | 4th Grade | Mean Scaled Score | 400.9 | 375.5 | 374.2 |
| 2004 | Mathematics | 4th Grade | Mean Scaled Score | 373.7 | 360.2 | 343.2 |
| 2005 | Mathematics | 4th Grade | Mean Scaled Score | 388.7 | 368.6 | 354 |
| 2006 | Mathematics | 4th Grade | Mean Scaled Score | 392.1 | 378.2 | 361.6 |
| 2007 | Mathematics | 4th Grade | Mean Scaled Score | 414.2 | 381 | 366.1 |
| 2008 | Mathematics | 4th Grade | Mean Scaled Score | 407.9 | 382.4 | 373.9 |
| 2009 | Mathematics | 4th Grade | Mean Scaled Score | 413.1 | 387.6 | 382.5 |
| 2010 | Mathematics | 4th Grade | Mean Scaled Score | 427.9 | 392.4 | 389.9 |
| 2011 | Mathematics | 4th Grade | Mean Scaled Score | 436.2 | 394.5 | 392.2 |
| 2012 | Mathematics | 4th Grade | Mean Scaled Score | 425.4 | 395.2 | 395.2 |
| 2013 | Mathematics | 4th Grade | Mean Scaled Score | 411.1 | 394.0 | 394.9 |
| 2004 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 373 | 346.1 | 337.7 |
| 2005 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 390.1 | 352.3 | 340.5 |
| 2006 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 381.9 | 350.8 | 342.6 |
| 2007 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 369.4 | 350.2 | 342.8 |
| 2008 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 390.5 | 352.3 | 347.6 |
| 2009 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 395.7 | 359 | 356.2 |
| 2010 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 384.5 | 362.4 | 359.4 |
| 2011 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 392.6 | 363.7 | 362 |
| 2012 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 394.3 | 365.4 | 366.1 |
| 2013 | English Language Arts Standards | 5th Grade | Mean Scaled Score | 384.9 | 366.2 | 365.2 |
| 2004 | Mathematics | 5th Grade | Mean Scaled Score | 403.3 | 351.4 | 335.8 |
| 2005 | Mathematics | 5th Grade | Mean Scaled Score | 447.6 | 369.5 | 349.6 |
| 2006 | Mathematics | 5th Grade | Mean Scaled Score | 444.3 | 372.1 | 356.6 |
| 2007 | Mathematics | 5th Grade | Mean Scaled Score | 421.4 | 373.2 | 356.8 |
| 2008 | Mathematics | 5th Grade | Mean Scaled Score | 453 | 376.7 | 364.6 |
| 2009 | Mathematics | 5th Grade | Mean Scaled Score | 448.6 | 377.8 | 375.8 |
| 2010 | Mathematics | 5th Grade | Mean Scaled Score | 414.4 | 382.6 | 383.4 |
| 2011 | Mathematics | 5th Grade | Mean Scaled Score | 434.5 | 385.8 | 392.6 |
| 2012 | Mathematics | 5th Grade | Mean Scaled Score | 437.4 | 387.4 | 395.3 |
| 2013 | Mathematics | 5th Grade | Mean Scaled Score | 430.9 | 386.0 | 393.2 |
| 2004 | Science | 5th Grade | Mean Scaled Score | 356.4 | 322.8 | 318.5 |
| 2005 | Science | 5th Grade | Mean Scaled Score | 354.4 | 330.2 | 324.6 |
| 2006 | Science | 5th Grade | Mean Scaled Score | 348.2 | 330.6 | 328.7 |
| 2007 | Science | 5th Grade | Mean Scaled Score | 365.6 | 335.7 | 334.3 |
| 2008 | Science | 5th Grade | Mean Scaled Score | 391.3 | 344.9 | 345.2 |
| 2009 | Science | 5th Grade | Mean Scaled Score | 395.2 | 354.6 | 354.1 |
| 2010 | Science | 5th Grade | Mean Scaled Score | 396.1 | 362 | 362.2 |
| 2011 | Science | 5th Grade | Mean Scaled Score | 413 | 366.6 | 367.2 |
| 2012 | Science | 5th Grade | Mean Scaled Score | 404.1 | 364.9 | 367.4 |
| 2013 | Science | 5th Grade | Mean Scaled Score | 376.3 | 367.8 | 366.9 |
| 2004 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 369.7 | 344.8 | 332.8 |
| 2005 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 380.7 | 346.3 | 335.4 |
| 2006 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 386.7 | 349.8 | 337.4 |
| 2007 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 371.6 | 349.8 | 339.5 |
| 2008 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 377.1 | 354.6 | 345.5 |
| 2009 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 397.2 | 359.2 | 352.5 |
| 2010 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 390.9 | 361.9 | 356.8 |
| 2011 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 387.1 | 364.5 | 358.4 |
| 2012 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 403.7 | 366.7 | 364.2 |
| 2013 | English Language Arts Standards | 6th Grade | Mean Scaled Score | 387.2 | 364.2 | 363.0 |
| 2004 | Mathematics | 6th Grade | Mean Scaled Score | 394.6 | 353.2 | 334.7 |
| 2005 | Mathematics | 6th Grade | Mean Scaled Score | 410 | 357 | 339.5 |
| 2006 | Mathematics | 6th Grade | Mean Scaled Score | 417.3 | 360.3 | 341 |
| 2007 | Mathematics | 6th Grade | Mean Scaled Score | 398.7 | 363.3 | 343.2 |
| 2008 | Mathematics | 6th Grade | Mean Scaled Score | 392.9 | 363.2 | 347.9 |
| 2009 | Mathematics | 6th Grade | Mean Scaled Score | 413.7 | 368.1 | 354.5 |
| 2010 | Mathematics | 6th Grade | Mean Scaled Score | 407.3 | 370.2 | 360.5 |
| 2011 | Mathematics | 6th Grade | Mean Scaled Score | 409.6 | 374.7 | 364.6 |
| 2012 | Mathematics | 6th Grade | Mean Scaled Score | 420.1 | 373.3 | 366.8 |
| 2013 | Mathematics | 6th Grade | Mean Scaled Score | 408.0 | 369.4 | 366.5 |
Some data by SchoolDigger.com.
* Cosumnes River Elementary Primary 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.