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North Mianus School

Public Grades K-5

1^st

SchoolDigger Rank ?

of 492 Connecticut Elementary Schools

Better than 100% of Connecticut elementary schools

Summary

North Mianus School is a K–5 elementary school in Riverside, CT, serving 423 students as part of the Greenwich School District, a district ranked 14th out of 153 in Connecticut. The school currently holds the #1 ranking among all 491 Connecticut elementary schools for 2025-2026, marking its second consecutive year at the top after a steady climb from #41 a decade ago.

Academically, North Mianus is exceptionally strong across all subjects. In 2025-2026, proficiency rates on state assessments ranged from about 90% to 95% in English language arts, math, and science — roughly 40–50 percentage points above state averages and 8–15 points above the district. This balanced excellence sets it apart from schools that excel in one subject but lag in another. The school also earns top statewide rankings for specific student groups, including #1 for male students. Among nearby Greenwich elementaries, Riverside School ranks #2, North Street School #8, and International School At Dundee #17 — while Cos Cob School, just 1.5 miles away, trails with 4th-grade math proficiency at 62.9% versus North Mianus's 91.6%.

Beyond test scores, the school stands out for strong attendance and efficiency. Chronic absenteeism is just 4.9%, well below the district's 8.5% and the state's 16.4%. Only 2.84% of students qualify for free or reduced lunch, and the student–teacher ratio is a low 10.2. Notably, North Mianus spends less per student ($17,213) than many peer Greenwich schools — including Riverside School ($21,700) and Old Greenwich School ($33,050) — yet still achieves the top statewide ranking, demonstrating both excellence and efficiency.

423

Students ?

10.2

Student/teacher ratio ?

$25,677

Per pupil spending ?

2.8%

Free/discounted lunch ?

309 Palmer Hill Rd.
Riverside, CT 06878

(203) 637-9730

District: Greenwich School District

Students who attend North Mianus School usually attend:

Middle:	Eastern Middle School
High:	Greenwich High School

Racial breakdown:

White:

65.5%

Asian:

14.2%

Hispanic:

12.5%

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At a glance

▲ Ranking trend: Improving — 92nd percentile in 2016 → 100th in 2026

Strengths

✓Test scores above the Connecticut average (92% vs 51% meeting standards)

✓Ranks in the top 1% of Connecticut elementary schools

✓Ranking is trending up — up 8 percentile points since 2016

Students meeting standards (2025-2026) ?

This school92%

District avg82%

Connecticut avg51%

1^st of 492

Connecticut public elementary schools ?

Top 1%▲ up 8 pts since 2016

From top 8% (2016) to top 1% (2026)

See the entire ranking list of Connecticut Elementary Schools →

★★★★★

SchoolDigger rating ?

1^st of 11Elementary Schools in the Greenwich School District

14^th of 153Greenwich School District among Connecticut districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	96.4	1 of 492	99.8%	★★★★★
2025	96.3	1 of 493	99.8%	★★★★★
2024	95.0	4 of 497	99.2%	★★★★★
2023	94.2	6 of 491	98.8%	★★★★★
2022	92.8	16 of 490	96.7%	★★★★★
2021	94.5	13 of 538	97.6%	★★★★★
2019	91.8	20 of 522	96.2%	★★★★★
2018	94.0	4 of 532	99.2%	★★★★★
2017	92.5	11 of 519	97.9%	★★★★★
2016	88.6	41 of 518	92.1%	★★★★★
2015	91.2	24 of 551	95.6%	★★★★★
2013	82.9	49 of 557	91.2%	★★★★★
2012	80.6	67 of 564	88.1%	★★★★☆
2011	79.7	97 of 565	82.8%	★★★★☆
2010	84.1	18 of 579	96.9%	★★★★★
2009	80.2	81 of 566	85.7%	★★★★☆
2008	82.3	50 of 565	91.2%	★★★★★
2007	76.6	132 of 568	76.8%	★★★★☆
2006	86.4	12 of 570	97.9%	★★★★★

Female

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2024	92.9	3 of 237	98.7%	★★★★★
2023	92.6	4 of 230	98.3%	★★★★★
2022	81.1	46 of 234	80.3%	★★★★☆
2021	92.6	22 of 455	95.2%	★★★★★
2019	88.2	16 of 242	93.4%	★★★★★

Male

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2025	93.4	1 of 239	99.6%	★★★★★
2024	90.2	8 of 233	96.6%	★★★★★
2023	90.3	9 of 231	96.1%	★★★★★
2022	91.3	5 of 232	97.8%	★★★★★
2021	93.7	14 of 445	96.9%	★★★★★
2019	88.0	16 of 247	93.5%	★★★★★
2018	91.4	3 of 262	98.9%	★★★★★

White

Year	Avg score	Statewide rank	Connecticut percentile	Rating
2026	94.6	1 of 246	99.6%	★★★★★
2025	94.6	1 of 248	99.6%	★★★★★
2024	91.7	8 of 250	96.8%	★★★★★
2023	87.9	8 of 262	96.9%	★★★★★
2022	80.1	35 of 252	86.1%	★★★★☆
2021	84.6	35 of 327	89.3%	★★★★☆
2019	73.0	73 of 295	75.3%	★★★★☆
2018	85.5	26 of 296	91.2%	★★★★★

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

White (2026)100th percentile~ school

Male (2025)100th percentile~ school

Female (2024)99th percentile~ school

By subject vs Connecticut (2025-2026) ?

Mathematics92%+42 vs state

English Language Arts92%+41 vs state

Science90%+37 vs state

★

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Schools Near North Mianus School

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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	NGSS Science 8th Grade	SBAC English Language Arts 3rd Grade	SBAC English Language Arts 4th Grade	SBAC English Language Arts 5th Grade	SBAC English Language Arts 6th Grade	SBAC English Language Arts 7th Grade	SBAC English Language Arts 8th Grade	SBAC Mathematics 3rd Grade	SBAC Mathematics 4th Grade	SBAC Mathematics 5th Grade	SBAC Mathematics 6th Grade	SBAC Mathematics 7th Grade	SBAC Mathematics 8th Grade	Total
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
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
Westover School	Public	K-7	412 Stillwater Ave.	Stamford	06902	Western Connecticut Planning Region	Stamford School District	No	No	No	Yes	(203) 977-4572	624	57	11.0	60.1%	116 (18.6%)	109 (17.5%)	299 (47.9%)	69 (11.1%)	1 (0.2%)	0 (0.0%)	30 (4.8%)	31.3	329^th of 492 public elementary schools	33.1%		35.1	304^th of 493 public elementary schools	38.3%	25	45.6		41.7	36.3	51.7	45.9	38.5		38.5	35.2	34.8	27.1	32.1		$24,829
Stillmeadow School	Public	K-5	800 Stillwater Rd.	Stamford	06902	Western Connecticut Planning Region	Stamford School District	No	No	No	Yes	(203) 977-4507	587	47	12.3	54.0%	151 (25.7%)	47 (8.0%)	337 (57.4%)	28 (4.8%)	1 (0.2%)	0 (0.0%)	23 (3.9%)	28.2	339^th of 492 public elementary schools	31.1%		24.2	347^th of 493 public elementary schools	29.6%	8	40.0		36.9	33.0	41.2				48.8	33.0	40.7				$22,587
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
Hart School	Public	K-5	61 Adams Ave.	Stamford	06902	Western Connecticut Planning Region	Stamford School District	No	No	No	Yes	(203) 977-5082	566	44	12.7	56.7%	75 (13.3%)	69 (12.2%)	342 (60.4%)	56 (9.9%)	1 (0.2%)	0 (0.0%)	23 (4.1%)	25.4	353^rd of 492 public elementary schools	28.3%		31.1	319^th of 493 public elementary schools	35.3%	34	47.6		23.3	36.8	40.2				31.1	42.5	35.4				$22,667
Stamford Charter School for Excellence	Public, Charter	PK, KG-8	1 Schuyler Ave.	Stamford	06902	Western Connecticut Planning Region	Stamford Charter School for Excellence District	Yes	No	No	Yes	(203) 989-0000	543	19	28.5	55.6%	15 (2.8%)	219 (40.3%)	170 (31.3%)	118 (21.7%)	4 (0.7%)	1 (0.2%)	16 (2.9%)	75.9	146^th of 492 public elementary schools	70.3%		84.8	69^th of 493 public elementary schools	86.0%	77	50.9	63.6	78.9	88.9	69.5	61.1	66.7	77.8	77.2	88.7	47.5	55.6	52.9	2608.0	$11,837
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
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
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

Frequently Asked Questions about North Mianus School

What district is North Mianus School in?

Greenwich School District

Is North Mianus School a good school?

Yes! North Mianus School is one of the best elementary schools in the state. It ranks 1^st of 492 Connecticut elementary schools.

How many students attend North Mianus School?

In the 2024-25 school year, 423 students attended North Mianus School.

What schools do graduates of North Mianus School attend?

Students who attend North Mianus School usually go on to attend:

Middle : Eastern Middle School
High : Greenwich High School

What is the racial makeup of North Mianus School?

Students at North Mianus School are 65% White, 14% Asian, 13% Hispanic, 7% Two or more races.

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Latest Connecticut data All new data »

2024–25 through 2025–26 attendance data & graduation ratesAug 31, 2026

2025–26 NGSS, SAT & SBAC test scoresAug 31, 2026

2024–25 school spending dataApr 2, 2026

2024–25 attendance dataNov 6, 2025

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.