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Southbury Elementary School

Q: Is Southbury Elementary School a good school?

Southbury Elementary School ranks 622 nd of 1737 Illinois elementary schools. SchoolDigger rates this school 3 stars out of 5.

Public Grades K-5

622^nd

SchoolDigger Rank ?

of 1,737 Illinois Elementary Schools

Better than 64% of Illinois elementary schools

Summary

In Oswego, Illinois, Southbury Elementary School serves 676 students in grades K–5. In 2025–2026, its all-grades IAR proficiency was above state and district levels in both ELA and math, and its fifth-grade science result was also above both. The most important takeaway is that results are broadly strong against the state and district, but math is Southbury’s clearest weakness compared with nearby same-district schools.

Southbury’s strongest local comparisons were fifth-grade science and ELA: it ranked third of nine same-district schools in science and fourth in ELA, compared with seventh in math. Its proficiency was 69% in ELA, 46% in math, and 65% in fifth-grade science. Those results were 13, 6, and 17 percentage points above the state, respectively; compared with CUSD 308, Southbury was ahead by 6 points in ELA, 2 in math, and 6 in science. Its math score was 3 points below the same-district schools’ average, while ELA was 7 points above that average. Fourth-grade math stands out as a particular concern: Southbury scored 41%, 9 points below the district result.

Results have improved over time, especially in ELA: proficiency rose from 44% in 2023–2024 to 69% in 2025–2026, while math gained 13 percentage points overall but slipped from 48% to 46% in the latest year. SchoolDigger ranked Southbury 622nd of 1,737 schools, at the 64th percentile with 3 stars in 2025–2026; its percentile was 78 in both 2020–2021 and 2021–2022. For context, its 2024–2025 student-teacher ratio was 15.9, above the 13.6 average among same-district peers. In 2024–2025, 26% of students were free/reduced lunch eligible, below the same-district average of 34%. SchoolDigger’s statewide subgroup rankings also show a notable rise for Hispanic students: 77th percentile in 2025–2026, up 34 points from 2023–2024. Its ranking for Asian students was lower, at the 23rd percentile in 2025–2026, compared with the school’s overall 64th percentile.

676

Students ?

15.9

Student/teacher ratio ?

$13,467

Per pupil spending ?

25.6%

Free/reduced lunch eligible (2024-25) ?

98.1%

Measles protection (all grades) (2025-26)

820 Preston Ln
Oswego, IL 60543-2003

(630) 551-9800

District: Cusd 308

Students who attend Southbury Elementary School usually attend:

Middle:	Traughber Junior High School
High:	Oswego High School

Racial breakdown:

White:

52.8%

Hispanic:

16.4%

Asian:

13.8%

See top rated Illinois elementary schools

Compare Southbury Elementary School to nearby elementary schools!

At a glance

▼ Ranking trend: Declining — 77th percentile in 2016 → 64th in 2026

Strengths

✓Test scores above the Illinois average (60% vs 48% meeting standards)

✓Above the Illinois median (64th percentile)

Worth a look

!Ranking has slipped — down 13 percentile points since 2016

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

Students meeting standards (2025-2026) ?

This school60%

District avg55%

Illinois avg48%

622^nd of 1,737

Illinois public elementary schools ?

Top 36%▼ down 13 pts since 2016

From top 23% (2016) to top 36% (2026)

See the entire ranking list of Illinois Elementary Schools →

★★★★★

SchoolDigger rating ?

7^th of 13Elementary Schools in the Cusd 308

314^th of 738Cusd 308 among Illinois 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	Illinois percentile	Rating
2026	62.6	622 of 1737	64.2%	★★★☆☆
2025	69.9	604 of 2056	70.6%	★★★★☆
2024	64.8	652 of 2067	68.5%	★★★☆☆
2023	69.7	568 of 2077	72.7%	★★★★☆
2022	75.7	462 of 2082	77.8%	★★★★☆
2021	74.3	433 of 1948	77.8%	★★★★☆
2019	69.2	575 of 2086	72.4%	★★★★☆
2018	76.5	434 of 2037	78.7%	★★★★☆
2017	68.7	599 of 2044	70.7%	★★★★☆
2016	74.8	463 of 2046	77.4%	★★★★☆
2015	81.7	325 of 2052	84.2%	★★★★☆
2014	75.7	499 of 2093	76.2%	★★★★☆
2013	57.0	1018 of 2167	53.0%	★★★☆☆
2012	65.2	898 of 2166	58.5%	★★★☆☆
2011	67.1	837 of 2147	61.0%	★★★☆☆
2010	74.1	589 of 2139	72.5%	★★★★☆

African American

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	65.6	168 of 688	75.6%	★★★★☆
2024	78.3	74 of 655	88.7%	★★★★☆
2023	57.6	198 of 692	71.4%	★★★★☆

Asian

Year	Avg score	Statewide rank	Illinois percentile	Rating
2026	33.1	136 of 177	23.2%	★☆☆☆☆
2025	47.6	147 of 234	37.2%	★★☆☆☆
2024	27.0	177 of 219	19.2%	★☆☆☆☆
2022	12.5	209 of 226	7.5%	☆☆☆☆☆
2019	54.6	123 of 243	49.4%	★★★☆☆

Disabled

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	49.9	437 of 1049	58.3%	★★★☆☆
2024	52.7	311 of 886	64.9%	★★★☆☆
2023	66.2	198 of 907	78.2%	★★★★☆

English Language Learner

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	65.6	179 of 788	77.3%	★★★★☆
2024	42.4	432 of 826	47.7%	★★☆☆☆
2023	47.2	330 of 788	58.1%	★★★☆☆

Female

Year	Avg score	Statewide rank	Illinois percentile	Rating
2026	55.2	550 of 1286	57.2%	★★★☆☆
2025	69.9	550 of 1942	71.7%	★★★★☆
2024	66.2	569 of 1942	70.7%	★★★★☆
2023	73.9	438 of 1957	77.6%	★★★★☆
2022	77.9	376 of 1970	80.9%	★★★★☆
2021	78.0	295 of 1680	82.4%	★★★★☆
2019	63.7	673 of 2019	66.7%	★★★☆☆
2018	73.4	465 of 1964	76.3%	★★★★☆

Hispanic

Year	Avg score	Statewide rank	Illinois percentile	Rating
2026	70.5	124 of 536	76.9%	★★★★☆
2025	55.9	385 of 982	60.8%	★★★☆☆
2024	40.0	548 of 959	42.9%	★★☆☆☆
2023	52.7	380 of 970	60.8%	★★★☆☆
2022	72.7	163 of 954	82.9%	★★★★☆
2019	42.5	528 of 955	44.7%	★★☆☆☆
2018	71.0	177 of 938	81.1%	★★★★☆

Low Socio Economic Status

Year	Avg score	Statewide rank	Illinois percentile	Rating
2026	65.1	272 of 1001	72.8%	★★★★☆
2025	70.9	372 of 1800	79.3%	★★★★☆
2024	59.8	555 of 1793	69.0%	★★★☆☆
2023	52.4	753 of 1808	58.4%	★★★☆☆
2022	66.2	401 of 1763	77.3%	★★★★☆
2019	66.5	425 of 1816	76.6%	★★★★☆
2018	63.3	475 of 1765	73.1%	★★★★☆

Male

Year	Avg score	Statewide rank	Illinois percentile	Rating
2026	47.5	674 of 1311	48.6%	★★☆☆☆
2025	66.6	617 of 1947	68.3%	★★★☆☆
2024	61.6	644 of 1959	67.1%	★★★☆☆
2023	62.1	625 of 1984	68.5%	★★★☆☆
2022	70.5	502 of 1977	74.6%	★★★★☆
2021	60.6	546 of 1707	68.0%	★★★☆☆
2019	71.8	485 of 2019	76.0%	★★★★☆
2018	77.9	374 of 1972	81.0%	★★★★☆

Special Education

Year	Avg score	Statewide rank	Illinois percentile	Rating
2025	40.7	686 of 1292	46.9%	★★☆☆☆
2024	57.7	388 of 1195	67.5%	★★★☆☆
2023	56.3	380 of 1156	67.1%	★★★☆☆

White

Year	Avg score	Statewide rank	Illinois percentile	Rating
2026	43.4	702 of 1149	38.9%	★★☆☆☆
2025	53.0	660 of 1389	52.5%	★★★☆☆
2024	52.5	650 of 1392	53.3%	★★★☆☆
2023	57.5	561 of 1419	60.5%	★★★☆☆
2022	60.1	527 of 1425	63.0%	★★★☆☆
2021	49.8	612 of 1308	53.2%	★★★☆☆
2019	51.3	707 of 1462	51.6%	★★★☆☆
2018	64.3	480 of 1463	67.2%	★★★☆☆

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)

English Language Learner (2025)77th percentile+7 vs school

Hispanic (2026)77th percentile+13 vs school

African American (2025)76th percentile+5 vs school

Low Socio Economic Status (2026)73rd percentile+9 vs school

Disabled (2025)58th percentile-12 vs school

Female (2026)57th percentile-7 vs school

Male (2026)49th percentile-16 vs school

Special Education (2025)47th percentile-24 vs school

White (2026)39th percentile-25 vs school

Asian (2026)23rd percentile-41 vs school

By subject vs Illinois (2025-2026) ?

English Language Arts69%+13 vs state

Science65%+17 vs state

Mathematics46%+6 vs state

★

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Schools Near Southbury Elementary 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 Vaccination Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				ISA Science (2026)	IAR English Language Arts (2026)				IAR Mathematics (2026)				Vaccination (2025-26)		Per Pupil Expenditures (2026)
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/reduced lunch (2024-25)	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	ISA Science 5th Grade	IAR English Language Arts 3rd Grade	IAR English Language Arts 4th Grade	IAR English Language Arts 5th Grade	IAR English Language Arts All Grades	IAR Mathematics 3rd Grade	IAR Mathematics 4th Grade	IAR Mathematics 5th Grade	IAR Mathematics All Grades	Vaccination: Measles protection (all grades)	Vaccination: Exemption rate	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Southbury Elementary School	Public	K-5	820 Preston Ln	Oswego	60543	Kendall County	Cusd 308	No	(n/a)	No	No	(630) 551-9800	676	43	15.9	25.6%	357 (52.8%)	75 (11.1%)	111 (16.4%)	93 (13.8%)	1 (0.1%)	1 (0.1%)	38 (5.6%)	62.6	622^nd of 1737 public elementary schools	64.2%		69.9	604^th of 2056 public elementary schools	70.6%	18	64.7	56.0	77.3	73.0	69.1	56.0	41.2	41.6	46.0	98.1%		$13,467	$185	$13,282
Prairie Point Elementary School	Public	K-5	3650 Grove Rd	Oswego	60543	Kendall County	Cusd 308	No	(n/a)	No	No	(630) 636-3600	455	31	14.7	17.1%	301 (66.2%)	25 (5.5%)	97 (21.3%)	15 (3.3%)	0 (0.0%)	0 (0.0%)	17 (3.7%)	68.6	503^rd of 1737 public elementary schools	71.0%		74.9	499^th of 2056 public elementary schools	75.7%	4	57.1	80.0	79.7	59.7	72.9	68.6	54.1	39.0	53.4	99.3%		$18,950	$931	$18,019
Old Post Elementary School	Public	K-5	100 Old Post Rd	Oswego	60543	Kendall County	Cusd 308	No	(n/a)	No	Yes	(630) 636-3400	387	29	13.4	30.7%	231 (59.7%)	22 (5.7%)	98 (25.3%)	15 (3.9%)	0 (0.0%)	0 (0.0%)	21 (5.4%)	61.8	640^th of 1737 public elementary schools	63.2%		70.5	588^th of 2056 public elementary schools	71.4%	52	62.7	58.8	74.0	61.4	65.7	57.7	48.7	41.2	48.5	96.1%		$16,682	$438	$16,245
Churchill Elementary School	Public	K-5	520 Secretariat Ln	Oswego	60543	Kendall County	Cusd 308	No	(n/a)	No	No	(630) 636-3800	425	31	13.8	22.1%	223 (52.5%)	44 (10.4%)	95 (22.4%)	40 (9.4%)	2 (0.5%)	2 (0.5%)	19 (4.5%)	77.1	349^th of 1737 public elementary schools	79.9%		72.1	550^th of 2056 public elementary schools	73.2%	201	69.4	71.9	71.3	73.0	72.0	66.7	49.4	65.1	58.9	97.5%		$18,739	$295	$18,444
Boulder Hill Elementary School	Public	K-5	163 Boulder Hill Pass	Montgomery	60538	Kendall County	Cusd 308	No	(n/a)	No	Yes	(630) 636-2900	476	44	10.8	58.8%	119 (25.0%)	54 (11.3%)	273 (57.4%)	6 (1.3%)	1 (0.2%)	0 (0.0%)	23 (4.8%)	31.6	1164^th of 1737 public elementary schools	33.0%		30.6	1421^st of 2056 public elementary schools	30.9%	257	47.3	45.1	52.9	47.9	48.4	41.5	30.9	29.8	34.0	96.7%		$14,987	$551	$14,435
Long Beach Elementary School	Public	PK, KG-5	67 Longbeach Rd	Montgomery	60538	Kendall County	Cusd 308	No	(n/a)	No	Yes	(630) 636-3300	632	35	18.0	59.5%	167 (26.4%)	64 (10.1%)	354 (56.0%)	22 (3.5%)	3 (0.5%)	0 (0.0%)	22 (3.5%)	21.6	1348^th of 1737 public elementary schools	22.4%		26.1	1537^th of 2056 public elementary schools	25.2%	189	35.0	38.5	50.5	40.2	42.6	33.3	36.6	18.2	28.5	94.8%		$15,007	$685	$14,322
Fox Chase Elementary School	Public	K-5	260 Fox Chase Dr N	Oswego	60543	Kendall County	Cusd 308	No	(n/a)	No	Yes	(630) 636-3500	661	40	16.7	37.7%	305 (46.1%)	81 (12.3%)	219 (33.1%)	24 (3.6%)	2 (0.3%)	0 (0.0%)	30 (4.5%)	63.6	607^th of 1737 public elementary schools	65.1%		71.6	560^th of 2056 public elementary schools	72.8%	47	53.0	68.0	70.4	64.7	67.7	66.0	55.7	34.5	51.5	95.5%		$16,423	$452	$15,972
Hunt Club Elementary	Public	K-5	4001 Hunt Club Dr	Oswego	60543	Kendall County	Cusd 308	No	(n/a)	No	No	(630) 636-2800	357	42	8.5	17.4%	207 (58.0%)	31 (8.7%)	89 (24.9%)	12 (3.4%)	2 (0.6%)	0 (0.0%)	16 (4.5%)	53.7	775^th of 1737 public elementary schools	55.4%		53.2	940^th of 2056 public elementary schools	54.3%	165	58.8	50.0	62.1	57.5	56.6	61.7	47.5	37.5	47.7	97.5%		$16,001	$185	$15,816
Rose E Krug Elementary School	Public	K-5	240 Melrose Ave	Aurora	60505	Kane County	Aurora East Unified School District 131	No	(n/a)	No	Yes	(630) 299-5280	271	16	17.1	66.8%	6 (2.2%)	37 (13.7%)	218 (80.4%)	0 (0.0%)	4 (1.5%)	1 (0.4%)	5 (1.8%)								(n/a)	27.8		26.5		18.1				11.7	98.7%		$23,509	$1,627	$21,882
Wolfs Crossing Elementary School	Public	K-5	3015 S Eola Rd	Aurora	60503	Will County	Cusd 308	No	(n/a)	No	No	(630) 636-3700	414	32	12.7	27.5%	169 (40.8%)	30 (7.2%)	85 (20.5%)	111 (26.8%)	5 (1.2%)	0 (0.0%)	13 (3.1%)	84.4	220^th of 1737 public elementary schools	87.3%		86.9	246^th of 2056 public elementary schools	88.0%	26	68.9	75.4	75.0	71.6	74.1	81.5	72.0	58.1	70.3	94.9%		$15,958	$331	$15,627

Frequently Asked Questions about Southbury Elementary School

What schools do graduates of Southbury Elementary School attend?

Students who attend Southbury Elementary School usually go on to attend:

Middle : Traughber Junior High School
High : Oswego High School

Is Southbury Elementary School a good school?

Southbury Elementary School ranks 622^nd of 1737 Illinois elementary schools. SchoolDigger rates this school 3 stars out of 5.

What is the racial makeup of Southbury Elementary School?

Students at Southbury Elementary School are 53% White, 16% Hispanic, 14% Asian, 11% African American, 6% Two or more races.

What district is Southbury Elementary School in?

Cusd 308

How many students attend Southbury Elementary School?

In the 2024-25 school year, 676 students attended Southbury Elementary School.

Rate Southbury Elementary School!

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Latest Illinois data All new data »

2025–26 school spending dataNewOct 30, 2026

2025–26 attendance data, dropout rates & graduation ratesNewOct 30, 2026

2025–26 ACT, IAR, ISA & PreACT Secure test scoresNewOct 30, 2026

2013–14 through 2025–26 immunization rates (updated)NewOct 19, 2026

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