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Best Elementary Schools in Zip Code 06878

Coming soon: We're expecting this year's test scores from the Connecticut Department of Education any day now — new rankings will be posted the moment they're released!

Coming soon: This year's test scores are expected from the Connecticut Department of Education any day now — new rankings will follow the moment they're released!

At a glance

Schools

1,205

Students

5-star schools

Top rankedNorth Mianus School1^st of 493 Connecticut elementary schools

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Biggest riser

International School At Dundee up 13 spots statewide this year

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Summary:

The 06878 zip code in Greenwich, Connecticut is home to three exceptional elementary schools: North Mianus School, Riverside School, and International School at Dundee. These schools consistently rank among the top elementary institutions in the state, providing a high-quality education to students in the area.

North Mianus School and Riverside School stand out as the top performers, with both schools ranking in the top 3 elementary schools in Connecticut for the 2024-2025 school year. These schools boast exceptional academic achievement, with over 90% of students proficient or better in English Language Arts and Mathematics across multiple grade levels. International School at Dundee also demonstrates strong academic performance, particularly in 4th and 5th grade. All three schools outperform the Greenwich School District and Connecticut state averages in most subject areas.

While the schools share similar chronic absenteeism rates, there is some variation in the percentage of free and reduced lunch recipients, with International School at Dundee having a higher proportion of students from lower-income families compared to the other two schools. Additionally, the schools differ in their spending per student, with Riverside School having the highest at $21,700, followed by International School at Dundee at $22,395, and North Mianus School at $17,213. Overall, the data highlights the exceptional educational opportunities available to students in the 06878 zip code, with North Mianus School and Riverside School standing out as top-performing elementary schools in the state.

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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 (2025)				Ranking (2024)				NGSS Science (2025)	SBAC English Language Arts (2025)			SBAC Mathematics (2025)			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	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	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
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%)	96.3	1^st of 493 public elementary schools	99.8%		95	4^th of 497 public elementary schools	99.2%	3	89.4	93.6	88.3	90.6	94.9	92.2	96.5	$25,677
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%)	96.1	3^rd of 493 public elementary schools	99.4%		95.8	1^st of 497 public elementary schools	99.8%	2	87.2		88.3	96.2		93.5	93.6	$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%)	91.6	19^th of 493 public elementary schools	96.1%		90.5	32^nd of 497 public elementary schools	93.6%	13	91.5	76.8			81.2	87.0		$27,915

Cities Near Zip Code 06878

City	Distance	# of Schools	Statewide Rank
Riverside	0.14 mi	4	4^th
Old Greenwich	0.85 mi	1	2^nd
Cos Cob	0.9 mi	1	88^th
Greenwich	1.52 mi	9	32^nd
Stamford	1.81 mi	24	148^th

See the top CT Connecticut cities

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.