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Elementary Schools in Greenwich School District

New rankings! SchoolDigger recently updated its Connecticut rankings with newly released test scores for the 2025-26 school year.

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At a glance

DistrictGreenwich School District14^th of 153 Connecticut districtsFull district overview →

Schools

3,914

Students

5-star schools

Top rankedNorth Mianus School1^st of 492 Connecticut elementary schools

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Biggest riser

New Lebanon School up 79 spots statewide this year

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Smallest classes

Hamilton Avenue School 7.9 students per teacher

SchoolDigger ratings

5★

4★

3★

Compare Connecticut districts →See the top-ranked Connecticut schools →

Summary:

The Greenwich School District in Connecticut is home to 11 elementary schools serving pre-kindergarten through 5th grade, with approximately 3,914 students combined, and ranks #14 out of 153 Connecticut districts with a 5-star rating. Individual school rankings range dramatically from #1 to #161 in the state. The district significantly outperforms state averages — 83.3% of 3rd graders are proficient in ELA versus 47.3% statewide, and 85.6% are proficient in math versus 52.2% statewide.

North Mianus School is the academic leader, ranked #1 in Connecticut for both 2024–25 and 2025–26, with 94.9% of 3rd graders proficient in ELA and 92.4% of 5th graders proficient in math. Riverside School is elite and consistent, ranking #2 in 2025–26 and #1 in 2023–24, with the district's lowest free/reduced lunch rate at 1.59% and lowest chronic absenteeism at 4.6%. New Lebanon School is the most improved, climbing from #186 in 2023–24 to #10 in 2025–26 despite having the district's highest poverty rate at 61.6%. International School At Dundee is a consistent top-tier performer at #17 with very low absenteeism. Glenville School dropped from #47 to #119 and spends the least per student at $13,446, while Hamilton Avenue School ranks #161 with 17.5% chronic absenteeism.

Poverty and chronic absenteeism are strongly associated with lower rankings, with the three highest-poverty schools — New Lebanon, Hamilton Avenue, and Julian Curtiss School — showing the highest absenteeism rates. Money alone does not guarantee results: Old Greenwich School spends $33,050 per student yet ranked #12, while North Mianus spends $17,213 and is the #1 school. North Street School and Parkway School also rank in the top 15, forming a consistently strong cluster. Hamilton Avenue has the smallest classes at a 7.9 student-teacher ratio yet still lags academically. Several schools show upward momentum, including New Lebanon School (#186→#89→#10), Julian Curtiss School (#171→#73), Cos Cob School (#159→#102), and Hamilton Avenue School (#287→#161), pointing to a district moving in a positive direction.

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				NGSS Science (2026)	SBAC English Language Arts (2026)			SBAC Mathematics (2026)			Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients (2025)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	NGSS Science 5th Grade	SBAC English Language Arts 3rd Grade	SBAC English Language Arts 4th Grade	SBAC English Language Arts 5th Grade	SBAC Mathematics 3rd Grade	SBAC Mathematics 4th Grade	SBAC Mathematics 5th Grade	Total
Parkway School	Public	K-5	141 Lower Cross Rd.	Greenwich	06831	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 869-7466	249	23	10.8	4.4%	198 (79.5%)	1 (0.4%)	16 (6.4%)	9 (3.6%)	0 (0.0%)	0 (0.0%)	25 (10.0%)	93	13^th of 492 public elementary schools	97.4%		92	17^th of 493 public elementary schools	96.6%	4	84.3	91.7	90.0	82.4	2531.0	2568.0	76.5	$30,098
Cos Cob School	Public	PK, KG-5	300 East Putnam Ave.	Cos Cob	06807	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 869-4670	343	34	10.0	16.0%	231 (67.3%)	4 (1.2%)	70 (20.4%)	18 (5.2%)	2 (0.6%)	0 (0.0%)	18 (5.2%)	80.8	102^nd of 492 public elementary schools	79.3%		73	156^th of 493 public elementary schools	68.4%	54	77.3	77.2	69.4	72.7	77.2	62.9	65.9	$30,090
Glenville School	Public	K-5	33 Riversville Rd.	Greenwich	06831	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 531-9287	411	39	10.4	11.2%	273 (66.4%)	1 (0.2%)	65 (15.8%)	35 (8.5%)	0 (0.0%)	0 (0.0%)	37 (9.0%)	78.5	119^th of 492 public elementary schools	75.8%		87.7	47^th of 493 public elementary schools	90.5%	72	69.8	69.1	72.7	71.4	66.7	72.7	63.5	$26,964
Hamilton Avenue School	Public	PK, KG-5	184 Hamilton Avenue	Greenwich	06830	Western Connecticut Planning Region	Greenwich School District	No	No	No	Yes	(203) 869-1685	299	38	7.9	59.9%	92 (30.8%)	13 (4.3%)	167 (55.9%)	9 (3.0%)	3 (1.0%)	0 (0.0%)	15 (5.0%)	72.9	161^st of 492 public elementary schools	67.3%		69.2	177^th of 493 public elementary schools	64.1%	16	499.0	71.0	68.6	2524.0	58.1	2547.0	2561.0	$33,736
Julian Curtiss School	Public	PK, KG-5	180 East Elm St.	Greenwich	06830	Western Connecticut Planning Region	Greenwich School District	No	No	No	Yes	(203) 869-1896	236	28	8.3	39.0%	100 (42.4%)	12 (5.1%)	81 (34.3%)	21 (8.9%)	0 (0.0%)	0 (0.0%)	22 (9.3%)	85	73^rd of 492 public elementary schools	85.2%		84	73^rd of 493 public elementary schools	85.2%		516.0	87.1	72.4	73.8	2519.0	86.2	64.3	$34,301
New Lebanon School	Public	PK, KG-5	25 Mead Ave.	Greenwich	06830	Western Connecticut Planning Region	Greenwich School District	No	No	No	Yes	(203) 531-9139	375	37	10.2	61.6%	113 (30.1%)	6 (1.6%)	218 (58.1%)	18 (4.8%)	2 (0.5%)	0 (0.0%)	18 (4.8%)	93.4	10^th of 492 public elementary schools	98.0%		81.9	89^th of 493 public elementary schools	81.9%	79	83.7	2489.0	82.5	87.8	86.5	2572.0	87.8	$28,398
North Mianus School	Public	K-5	309 Palmer Hill Rd.	Riverside	06878	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 637-9730	423	41	10.2	2.8%	277 (65.5%)	2 (0.5%)	53 (12.5%)	60 (14.2%)	1 (0.2%)	0 (0.0%)	30 (7.1%)	96.4	1^st of 492 public elementary schools	99.8%		96.3	1^st of 493 public elementary schools	99.8%		89.9	94.9	90.4	89.9	2569.0	91.6	92.4	$25,677
North Street School	Public	PK, KG-5	381 North St.	Greenwich	06830	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 869-6756	411	38	10.8	4.4%	306 (74.5%)	3 (0.7%)	56 (13.6%)	18 (4.4%)	0 (0.0%)	1 (0.2%)	27 (6.6%)	94	8^th of 492 public elementary schools	98.4%		93.8	8^th of 493 public elementary schools	98.4%		83.7	85.3	94.5	86.0	89.3	87.3	76.7	$24,905
Old Greenwich School	Public	PK, KG-5	825 Sound Beach Ave.	Old Greenwich	06870	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 637-0150	385	37	10.5	2.3%	323 (83.9%)	0 (0.0%)	29 (7.5%)	15 (3.9%)	0 (0.0%)	0 (0.0%)	18 (4.7%)	93	12^th of 492 public elementary schools	97.6%		95.7	4^th of 493 public elementary schools	99.2%	8	84.5	86.6	86.4	79.3	92.5	90.9	74.1	$26,372
Riverside School	Public	K-5	90 Hendrie Ave.	Riverside	06878	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 637-1440	440	37	11.7	1.6%	314 (71.4%)	0 (0.0%)	80 (18.2%)	23 (5.2%)	1 (0.2%)	0 (0.0%)	22 (5.0%)	95.6	2^nd of 492 public elementary schools	99.6%		96.1	3^rd of 493 public elementary schools	99.4%	1	85.1	87.5	2584.0	91.9	94.4	2588.0	87.8	$25,196
International School At Dundee	Public	K-5	55 Florence Rd.	Riverside	06878	Western Connecticut Planning Region	Greenwich School District	No	No	No	No	(203) 637-3800	342	30	11.2	10.5%	157 (45.9%)	3 (0.9%)	64 (18.7%)	87 (25.4%)	0 (0.0%)	0 (0.0%)	31 (9.1%)	92.4	17^th of 492 public elementary schools	96.5%		91.6	19^th of 493 public elementary schools	96.1%	2	78.8	87.9	85.5	78.8	2539.0	85.5	86.5	$27,915

Districts nearby

District	Distance	# of Schools	Statewide Rank
Stamford School District	4.81 mi	21	129^th
Connecticut Technical Education and Career System	6.59 mi	17	138^th
Stamford Big Picture Learning Academy District	6.6 mi	1
Stamford Charter School for Excellence District	6.87 mi	1	61^st
New Canaan School District	6.9 mi	5	2^nd

See the top CT Connecticut districts

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

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries 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.