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South Mountain School

Public Grades PK, KG-4

48^th

SchoolDigger Rank ?

of 1,347 New Jersey Elementary Schools

Better than 96% of New Jersey elementary schools

Summary

South Mountain School is an exceptional elementary school in Millburn, New Jersey, serving 285 students in grades PK-4. Part of the highly-ranked Millburn Township School District, South Mountain consistently performs among the top elementary schools in the state.

The school's academic performance is truly outstanding, with students significantly outperforming state averages on the NJSLA exams. In the 2024-2025 school year, 68.1% of 3rd-graders and 86.4% of 4th-graders were proficient or better in English Language Arts, compared to state averages of 44.9% and 53.6%, respectively. In Mathematics, 91.1% of 3rd-graders and 89.8% of 4th-graders were proficient, far exceeding the state averages of 49.8% and 46.7%. South Mountain's performance is consistently strong across different student subgroups, including female, male, Asian, and white students, as well as for special education students.

When compared to nearby schools, South Mountain's academic excellence stands out. While other top-ranked schools in the Millburn Township School District, such as Glenwood School and Deerfield School, also perform well, South Mountain's results are notably stronger. The school's consistent 5-star rating from SchoolDigger and low chronic absenteeism rates further demonstrate its commitment to providing an exceptional educational experience for its students.

278

Students ?

9.6

Student/teacher ratio ?

$14,387

Per pupil spending ?

2.9%

Free/discounted lunch ?

2 Southern Slope Drive
Millburn, NJ 07041

(973) 921-1394

District: Millburn Township School District

Students who attend South Mountain School usually attend:

Middle:	Millburn Middle School
High:	Millburn High School

Racial breakdown:

Asian:

55.0%

White:

26.3%

Two or more races:

8.3%

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Compare South Mountain School to nearby elementary schools!

At a glance

▬ Ranking trend: Holding steady — 97th percentile in 2015 → 96th in 2025

Strengths

✓Test scores above the New Jersey average (85% vs 49% meeting standards)

✓Ranks in the top 4% of New Jersey elementary schools

✓Small classes — about 10 students per teacher

Worth a look

!Some student groups rank well below the school's overall statewide standing

Students meeting standards (2024-2025) ?

This school85%

District avg87%

New Jersey avg49%

48^th of 1,347

New Jersey public elementary schools ?

Top 4%▼ down 1 pts since 2015

See the entire ranking list of New Jersey Elementary Schools →

★★★★★

SchoolDigger rating ?

3^rd of 5Elementary Schools in the Millburn Township School District

14^th of 609Millburn Township School District among New Jersey 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	New Jersey percentile	Rating
2025	93.7	48 of 1347	96.4%	★★★★★
2024	96.3	19 of 1338	98.6%	★★★★★
2023	95.1	31 of 1342	97.7%	★★★★★
2022	95.4	31 of 1345	97.7%	★★★★★
2021	96.8	21 of 1317	98.4%	★★★★★
2019	92.2	55 of 1360	96.0%	★★★★★
2018	93.0	44 of 1353	96.7%	★★★★★
2017	91.3	67 of 1352	95.0%	★★★★★
2016	88.3	123 of 1346	90.9%	★★★★★
2015	94.7	34 of 1357	97.5%	★★★★★
2014	73.0	413 of 1363	69.7%	★★★☆☆
2013	82.7	155 of 1367	88.7%	★★★★☆
2012	77.9	283 of 1363	79.2%	★★★★☆
2011	79.1	241 of 1360	82.3%	★★★★☆
2010	85.4	63 of 1354	95.3%	★★★★★
2009	82.1	154 of 1346	88.6%	★★★★☆
2008	86.5	13 of 1338	99.0%	★★★★★
2007	82.1	68 of 1329	94.9%	★★★★★
2006	85.0	22 of 1314	98.3%	★★★★★
2005	88.9	3 of 1303	99.8%	★★★★★
2004	80.3	179 of 1298	86.2%	★★★★☆
2003	88.9	24 of 1204	98.0%	★★★★★

Asian

Year	Avg score	Statewide rank	New Jersey percentile	Rating
2025	75.5	74 of 330	77.6%	★★★★☆
2024	81.8	31 of 340	90.9%	★★★★★
2023	86.8	15 of 346	95.7%	★★★★★
2022	76.9	65 of 348	81.3%	★★★★☆
2021	68.6	107 of 339	68.4%	★★★☆☆
2019	63.9	127 of 370	65.7%	★★★☆☆
2018	86.0	20 of 370	94.6%	★★★★★

Female

Year	Avg score	Statewide rank	New Jersey percentile	Rating
2025	92.2	61 of 1326	95.4%	★★★★★
2024	95.4	22 of 1317	98.3%	★★★★★
2023	93.3	55 of 1318	95.8%	★★★★★
2022	96.0	12 of 1326	99.1%	★★★★★
2021	95.9	21 of 1290	98.4%	★★★★★
2019	86.3	138 of 1331	89.6%	★★★★☆
2018	91.6	46 of 1333	96.5%	★★★★★

Male

Year	Avg score	Statewide rank	New Jersey percentile	Rating
2025	94.0	35 of 1318	97.3%	★★★★★
2024	95.7	23 of 1313	98.2%	★★★★★
2023	95.2	25 of 1315	98.1%	★★★★★
2022	93.9	51 of 1324	96.1%	★★★★★
2021	96.3	18 of 1297	98.6%	★★★★★
2019	94.5	21 of 1335	98.4%	★★★★★
2018	93.1	51 of 1334	96.2%	★★★★★

Special Education

Year	Avg score	Statewide rank	New Jersey percentile	Rating
2022	91.2	56 of 949	94.1%	★★★★★
2021	97.3	7 of 868	99.2%	★★★★★
2019	95.2	38 of 1007	96.2%	★★★★★
2018	77.7	181 of 1001	81.9%	★★★★☆

White

Year	Avg score	Statewide rank	New Jersey percentile	Rating
2025	79.5	161 of 970	83.4%	★★★★☆
2024	86.9	76 of 963	92.1%	★★★★★
2023	70.6	263 of 975	73.0%	★★★★☆
2022	87.7	71 of 976	92.7%	★★★★★
2021	91.7	28 of 964	97.1%	★★★★★
2019	91.3	22 of 1023	97.8%	★★★★★
2018	81.8	122 of 1022	88.1%	★★★★☆

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)

Male (2025)97th percentile~ school

Female (2025)95th percentile~ school

Special Education (2022)94th percentile-4 vs school

White (2025)83rd percentile-13 vs school

Asian (2025)78th percentile-19 vs school

By subject vs New Jersey (2024-2025) ?

Mathematics90%+42 vs state

English Language Arts79%+29 vs state

★

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Schools Near South Mountain 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 (2025)				Ranking (2024)				NJSLA-S Science (2025)	NJSLA English Language Arts (2025)			NJSLA Mathematics (2025)			Per Pupil Expenditures (2019)
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	NJSLA-S Science 5th Grade	NJSLA English Language Arts 3rd Grade	NJSLA English Language Arts 4th Grade	NJSLA English Language Arts 5th Grade	NJSLA Mathematics 3rd Grade	NJSLA Mathematics 4th Grade	NJSLA Mathematics 5th Grade	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
South Mountain School	Public	PK, KG-4	2 Southern Slope Drive	Millburn	07041	Essex County	Millburn Township School District	No	(n/a)	No	Yes	(973) 921-1394	278	29	9.6	2.9%	73 (26.3%)	13 (4.7%)	16 (5.8%)	153 (55.0%)	0 (0.0%)	0 (0.0%)	23 (8.3%)	93.7	48^th of 1347 public elementary schools	96.4%		96.3	19^th of 1338 public elementary schools	98.6%	29		68.1	86.4		91.1	89.8		$14,387	$211	$14,176
Wyoming School	Public	K-4	55 Myrtle Ave	Millburn	07041	Essex County	Millburn Township School District	No	(n/a)	No	Yes	(973) 761-1619	346	27	12.8	2.6%	94 (27.2%)	4 (1.2%)	36 (10.4%)	169 (48.8%)	0 (0.0%)	0 (0.0%)	42 (12.1%)	93.5	54^th of 1347 public elementary schools	96.0%		94.7	36^th of 1338 public elementary schools	97.3%	18		86.8	83.4		94.9	71.6		$14,064	$436	$13,628
James Caldwell Elementary School	Public	3-5	36 Caldwell Place	Springfield	07081	Union County	Springfield Public School District	No	(n/a)	No	Yes	(973) 376-1025	276	21	13.1	17.0%	144 (52.2%)	29 (10.5%)	66 (23.9%)	22 (8.0%)	0 (0.0%)	4 (1.4%)	10 (3.6%)	73	377^th of 1347 public elementary schools	72.0%		69.5	421^st of 1338 public elementary schools	68.5%	44	38.7	52.5	68.6	66.2	65.0	68.2	54.6	$15,601	$168	$15,433
Battle Hill Elementary	Public	PK, KG-4	2600 Killian Place	Union	07083	Union County	Township of Union School District	No	(n/a)	No	No	(908) 851-6480	414	36	11.5	46.4%	84 (20.3%)	131 (31.6%)	151 (36.5%)	30 (7.2%)	1 (0.2%)	2 (0.5%)	15 (3.6%)	32.1	928^th of 1347 public elementary schools	31.1%		24	1019^th of 1338 public elementary schools	23.8%	91		52.4	29.5		41.2	24.6		$12,502		$12,502
Tuscan Elementary School	Public	K-5	25 Harvard Ave	Maplewood	07040	Essex County	South Orange-Maplewood School District	No	(n/a)	No	No	(973) 378-5221	531	46	11.5	7.2%	347 (65.3%)	59 (11.1%)	63 (11.9%)	12 (2.3%)	1 (0.2%)	0 (0.0%)	49 (9.2%)	89.7	123^rd of 1347 public elementary schools	90.9%		87.2	169^th of 1338 public elementary schools	87.4%	46	55.7	73.9	84.5	79.5	78.3	66.7	78.5	$5,473		$5,473
Hannah Caldwell Elementary	Public	PK, KG-4	1120 Commerce Avenue	Union	07083	Union County	Township of Union School District	No	(n/a)	No	No	(908) 206-6101	812	52	15.6	39.8%	114 (14.0%)	329 (40.5%)	253 (31.2%)	72 (8.9%)	2 (0.2%)	4 (0.5%)	38 (4.7%)	24	1035^th of 1347 public elementary schools	23.2%		29.6	949^th of 1338 public elementary schools	29.1%	86		34.3	37.8		37.0	24.0		$9,488		$9,488
Delia Bolden Elementary School	Public	K-5	518 Ridgewood Rd	Maplewood	07040	Essex County	South Orange-Maplewood School District	No	(n/a)	No	No	(973) 378-7696	518	41	12.7	8.5%	292 (56.4%)	80 (15.4%)	54 (10.4%)	12 (2.3%)	2 (0.4%)	0 (0.0%)	78 (15.1%)	80.5	280^th of 1347 public elementary schools	79.2%		85.5	201^st of 1338 public elementary schools	85.0%	79	54.8	67.1	58.5	85.4	56.2	55.7	64.6	$4,804		$4,804
Glenwood School	Public	K-4	325 Taylor Road South	Short Hills	07078	Essex County	Millburn Township School District	No	(n/a)	No	No	(973) 379-7576	315	25	12.7	1.0%	84 (26.7%)	9 (2.9%)	11 (3.5%)	186 (59.0%)	0 (0.0%)	0 (0.0%)	25 (7.9%)	97.8	5^th of 1347 public elementary schools	99.6%		98.1	3^rd of 1338 public elementary schools	99.8%	2		91.4	97.6		88.0	100.0		$13,622	$34	$13,588
Connecticut Farms Elementary	Public	PK, KG-5	875 Stuyvesant Avenue	Union	07083	Union County	Township of Union School District	No	(n/a)	No	Yes	(908) 851-6470	430	38	11.3	42.8%	88 (20.5%)	142 (33.0%)	146 (34.0%)	36 (8.4%)	1 (0.2%)	2 (0.5%)	15 (3.5%)	49.4	686^th of 1347 public elementary schools	49.1%		41.7	772^nd of 1338 public elementary schools	42.3%	86		40.3	67.7		36.4	53.0		$9,283		$9,283
Deerfield School	Public	K-4	26 Troy Lane	Short Hills	07078	Essex County	Millburn Township School District	No	(n/a)	No	No	(973) 379-4843	358	29	12.2		124 (34.6%)	0 (0.0%)	12 (3.4%)	191 (53.4%)	0 (0.0%)	0 (0.0%)	31 (8.7%)	92.9	64^th of 1347 public elementary schools	95.2%		95.2	31^st of 1338 public elementary schools	97.7%	33		89.6	72.2		90.8	87.8		$13,641	$34	$13,607

Frequently Asked Questions about South Mountain School

Is South Mountain School a good school?

Yes! South Mountain School is one of the best elementary schools in the state. It ranks 48^th of 1347 New Jersey elementary schools.

What district is South Mountain School in?

Millburn Township School District

How many students attend South Mountain School?

In the 2024-25 school year, 278 students attended South Mountain School.

What schools do graduates of South Mountain School attend?

Students who attend South Mountain School usually go on to attend:

Middle : Millburn Middle School
High : Millburn High School

What is the racial makeup of South Mountain School?

Students at South Mountain School are 55% Asian, 26% White, 8% Two or more races, 6% Hispanic, 5% African American.

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