Cos Cob School

Public K-5

 300 East Putnam Ave
       Cos Cob, CT  06807-2545


 (203) 869-4670

District: Greenwich School District

SchoolDigger Rank:
148th of 513 Connecticut Elementary Schools


Student/Teacher Ratio:  12.5
Number of students:  444

Racial breakdown:

White:
68.9%
Hispanic:
13.3%
Asian:
9.2%
Free/Discounted Lunch Recipients:  9.2%

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Performance Trends
Compare Details In 2016, Cos Cob School ranked better than 71.2% of elementary schools in Connecticut. It also ranked 8th among 11 ranked elementary schools in the Greenwich School District. (See more...)
Compare Details In 2016 the calculated Average Standard Score was 74.25. (See more...)
Student Body
Compare Details Racial makeup is: White (68.9%), Hispanic (13.3%), Asian (9.2%). (See more...)
Compare Details 9.2% of students are receiving a free or discounted lunch. (See more...)
Teachers
Compare Details The student/teacher ratio at Cos Cob School is 12.5. 9 elementary schools in the Greenwich School District have better student/teacher ratios. (See more...)
Compare Cos Cob School employs 35.4 full-time teachers.
Map and boundary of Cos Cob School
Schooldigger 2016 Rankings:

Cos Cob School:

SchoolDigger Ranks Cos Cob School 148th of 513 Connecticut public elementary schools. (See Cos Cob School in the ranking list.)

Greenwich School District:

SchoolDigger ranks Greenwich School District 37th of 162 Connecticut school districts. (See district ranking list.)


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Rank History for Cos Cob School

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Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools CT State Percentile SchoolDigger Rating
2006 69.83 214th 555 61.4% 3 star ranking
2007 70.65 215th 553 61.1% 3 star ranking
2008 71.84 195th 550 64.5% 3 star ranking
2009 72.86 185th 551 66.4% 3 star ranking
2010 70.56 203rd 565 64.1% 3 star ranking
2011 75.14 153rd 550 72.2% 4 star ranking
2012 70.78 201st 549 63.4% 3 star ranking
2013 75.20 159th 542 70.7% 4 star ranking
2015 73.84 169th 534 68.4% 3 star ranking
2016 74.25 148th 513 71.2% 4 star ranking

Test score data source: test scores: Connecticut State Department of Education, rankings: SchoolDigger.com

Cos Cob School Test Scores

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Test score data source: Connecticut State Department of Education

About the Smarter Balanced Assessments: The 2015 Connecticut Smarter Balanced Assessments are new tests and replace the Connecticut Mastery Test (CMT) and Connecticut Academic Performance Test (CAPT) in English language arts/Literacy and Mathematics. The Individual Student Report shows a student's achievement on assessments based on the Connecticut Core Standards, which define learning expectations for what students should know and be able to do at each grade level.

Source: SDE: Smarter Balanced Reporting Information
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Enrollment information for Cos Cob School

Compare
Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1988 300 2 21 11 0 n/a n/a 0 334
1989 311 2 34 8 0 n/a n/a 0 355
1990 242 1 26 10 n/a n/a n/a 1 279
1991 219 0 48 5 0 n/a n/a 0 272
1992 225 1 42 8 0 n/a n/a 0 276
1993 227 2 40 15 0 n/a n/a 0 284
1994 338 1 43 25 0 n/a n/a 0 407
1995 378 3 61 35 0 n/a n/a 0 477
1996 378 3 61 35 0 n/a n/a 0 477
1997 369 4 62 42 0 n/a n/a 0 477
1998 376 3 62 31 0 n/a n/a 0 472
1999 386 4 68 28 0 n/a n/a 0 486
2000 379 3 54 29 0 n/a n/a 0 465
2001 361 3 67 19 0 n/a n/a 0 450
2002 348 4 69 30 0 n/a n/a 0 451
2003 348 4 69 30 0 n/a n/a 0 451
2004 335 6 65 32 0 n/a n/a 0 438
2005 324 7 61 39 1 n/a n/a 0 432
2006 343 7 70 52 0 n/a n/a 0 472
2007 301 4 70 46 1 n/a n/a 0 422
2008 289 3 66 49 0 n/a n/a 0 407
2009 300 3 67 45 0 n/a n/a 0 415
2010 292 11 66 48 0 n/a n/a 0 417
2011 285 12 53 55 0 0 13 0 418
2012 277 7 49 52 0 0 17 0 402
2013 305 11 45 52 0 0 21 0 434
2014 306 8 41 59 0 0 30 0 444

Test score data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity
For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at Cos Cob School

Compare
Year # Students Fulltime Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 334 27.0 12.3 n/a
1989 355 31.2 11.3 n/a
1990 279 25.6 10.8 n/a
1991 272 20.2 13.4 n/a
1992 276 24.0 11.5 2.5
1993 284 22.8 12.5 0.4
1994 407 27.8 14.6 6.6
1995 477 28.0 17.0 6.1
1996 477 28.0 17.0 6.1
1997 477 34.2 13.9 3.1
1998 472 32.9 14.3 3.2
1999 486 36.8 13.2 5.8
2000 465 38.9 12.0 4.5
2001 450 37.4 12.0 n/a
2002 451 35.0 12.9 3.5
2003 451 35.0 12.9 3.5
2004 438 34.9 12.6 4.3
2005 432 30.0 14.4 n/a
2006 472 29.8 15.8 2.1
2007 422 27.6 15.3 5.0
2008 407 31.6 12.9 4.9
2009 415 34.2 13.7 4.8
2010 417 34.1 12.2 7.4
2011 418 35.1 11.9 8.9
2012 402 34.1 11.7 9.7
2013 434 36.1 12.0 9.4
2014 444 35.4 12.5 9.2

Test score data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch
For information about the National School Lunch Program, see the FRAC Website

Student/Teacher Ratio Cos Cob School

Compare
Year # Students Fulltime Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 334 27.0 12.3 n/a
1989 355 31.2 11.3 n/a
1990 279 25.6 10.8 n/a
1991 272 20.2 13.4 n/a
1992 276 24.0 11.5 2.5
1993 284 22.8 12.5 0.4
1994 407 27.8 14.6 6.6
1995 477 28.0 17.0 6.1
1996 477 28.0 17.0 6.1
1997 477 34.2 13.9 3.1
1998 472 32.9 14.3 3.2
1999 486 36.8 13.2 5.8
2000 465 38.9 12.0 4.5
2001 450 37.4 12.0 n/a
2002 451 35.0 12.9 3.5
2003 451 35.0 12.9 3.5
2004 438 34.9 12.6 4.3
2005 432 30.0 14.4 n/a
2006 472 29.8 15.8 2.1
2007 422 27.6 15.3 5.0
2008 407 31.6 12.9 4.9
2009 415 34.2 13.7 4.8
2010 417 34.1 12.2 7.4
2011 418 35.1 11.9 8.9
2012 402 34.1 11.7 9.7
2013 434 36.1 12.0 9.4
2014 444 35.4 12.5 9.2

Test score data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio
Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.




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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Connecticut State Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that school and district boundary data are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.





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