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Southbury Elementary School

Public Grades K-5
604th
SchoolDigger Rank ?
of 2,056 Illinois Elementary Schools
Better than 71% of Illinois elementary schools
Summary

Southbury Elementary School is a public elementary school located in Oswego, Illinois, serving 605 students in grades K-5. The school is part of the Cusd 308 district, which is ranked 296 out of 811 districts in Illinois and has a 3-star rating from SchoolDigger.

Southbury Elementary School consistently performs above the district and state averages in both English Language Arts (ELA) and Mathematics proficiency across all grade levels. In the 2024-2025 school year, Southbury's ELA proficiency rate for all grades was 61.8%, compared to 58.2% for the district and 53.1% for the state. Similarly, Southbury's Mathematics proficiency rate for all grades was 48.1%, compared to 43.6% for the district and 38.5% for the state. The school's performance is particularly strong in 3rd grade ELA, where the proficiency rate was 63% compared to 56.6% for the district and 47.3% for the state.

When compared to nearby schools within the same district, such as Wolfs Crossing Elementary, Hunt Club Elementary, and Old Post Elementary, Southbury's academic performance is generally stronger. However, when compared to schools outside the district, such as Rose E Krug Elementary in the Aurora East Unified School District 131, Southbury's academic performance is significantly higher.

676
Students ?
15.9
Student/teacher ratio ?
$15,273
Per pupil spending ?
25.6%
Free/discounted lunch ?
 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%
more
 See top rated Illinois elementary schools

 Compare Southbury Elementary School to nearby elementary schools!
At a glance
Ranking trend: Declining — 84th percentile in 2015 → 71st in 2025
Strengths
Test scores above the Illinois average (55% vs 44% meeting standards)
Above the Illinois median (71st percentile)
Worth a look
!Ranking has slipped — down 13 percentile points since 2015
!Some student groups rank well below the school's overall statewide standing
Students meeting standards (2024-2025) ?
This school55%
District avg50%
Illinois avg44%
604th of 2,056
Illinois public elementary schools ?
Top 29%▼ down 14 pts since 2015
From top 16% (2015) to top 29% (2025)
See the entire ranking list of Illinois Elementary Schools →
SchoolDigger rating ?
9th of 13Elementary Schools in the Cusd 308
296th of 811Cusd 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

YearAvg scoreStatewide rankIllinois percentileRating
202569.9604 of 205670.6%★★★★☆
202464.8652 of 206768.5%★★★☆☆
202369.7568 of 207772.7%★★★★☆
202275.7462 of 208277.8%★★★★☆
202174.3433 of 194877.8%★★★★☆
201969.2575 of 208672.4%★★★★☆
201876.5434 of 203778.7%★★★★☆
201768.7599 of 204470.7%★★★★☆
201674.8463 of 204677.4%★★★★☆
201581.7325 of 205284.2%★★★★☆
201475.7499 of 209376.2%★★★★☆
201357.01018 of 216753.0%★★★☆☆
201265.2898 of 216658.5%★★★☆☆
201167.1837 of 214761.0%★★★☆☆
201074.1589 of 213972.5%★★★★☆

African American

YearAvg scoreStatewide rankIllinois percentileRating
202565.6168 of 68875.6%★★★★☆
202478.374 of 65588.7%★★★★☆
202357.6198 of 69271.4%★★★★☆

Asian

YearAvg scoreStatewide rankIllinois percentileRating
202547.6147 of 23437.2%★★☆☆☆
202427.0177 of 21919.2%★☆☆☆☆
202212.5209 of 2267.5%☆☆☆☆☆
201954.6123 of 24349.4%★★★☆☆

Disabled

YearAvg scoreStatewide rankIllinois percentileRating
202549.9437 of 104958.3%★★★☆☆
202452.7311 of 88664.9%★★★☆☆
202366.2198 of 90778.2%★★★★☆

English Language Learner

YearAvg scoreStatewide rankIllinois percentileRating
202565.6179 of 78877.3%★★★★☆
202442.4432 of 82647.7%★★☆☆☆
202347.2330 of 78858.1%★★★☆☆

Female

YearAvg scoreStatewide rankIllinois percentileRating
202569.9550 of 194271.7%★★★★☆
202466.2569 of 194270.7%★★★★☆
202373.9438 of 195777.6%★★★★☆
202277.9376 of 197080.9%★★★★☆
202178.0295 of 168082.4%★★★★☆
201963.7673 of 201966.7%★★★☆☆
201873.4465 of 196476.3%★★★★☆

Hispanic

YearAvg scoreStatewide rankIllinois percentileRating
202555.9385 of 98260.8%★★★☆☆
202440.0548 of 95942.9%★★☆☆☆
202352.7380 of 97060.8%★★★☆☆
202272.7163 of 95482.9%★★★★☆
201942.5528 of 95544.7%★★☆☆☆
201871.0177 of 93881.1%★★★★☆

Low Socio Economic Status

YearAvg scoreStatewide rankIllinois percentileRating
202570.9372 of 180079.3%★★★★☆
202459.8555 of 179369.0%★★★☆☆
202352.4753 of 180858.4%★★★☆☆
202266.2401 of 176377.3%★★★★☆
201966.5425 of 181676.6%★★★★☆
201863.3475 of 176573.1%★★★★☆

Male

YearAvg scoreStatewide rankIllinois percentileRating
202566.6617 of 194768.3%★★★☆☆
202461.6644 of 195967.1%★★★☆☆
202362.1625 of 198468.5%★★★☆☆
202270.5502 of 197774.6%★★★★☆
202160.6546 of 170768.0%★★★☆☆
201971.8485 of 201976.0%★★★★☆
201877.9374 of 197281.0%★★★★☆

Special Education

YearAvg scoreStatewide rankIllinois percentileRating
202540.7686 of 129246.9%★★☆☆☆
202457.7388 of 119567.5%★★★☆☆
202356.3380 of 115667.1%★★★☆☆

White

YearAvg scoreStatewide rankIllinois percentileRating
202553.0660 of 138952.5%★★★☆☆
202452.5650 of 139253.3%★★★☆☆
202357.5561 of 141960.5%★★★☆☆
202260.1527 of 142563.0%★★★☆☆
202149.8612 of 130853.2%★★★☆☆
201951.3707 of 146251.6%★★★☆☆
201864.3480 of 146367.2%★★★☆☆
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)
Low Socio Economic Status (2025)79th percentile+9 vs school
English Language Learner (2025)77th percentile+7 vs school
African American (2025)76th percentile+5 vs school
Female (2025)72nd percentile~ school
Male (2025)68th percentile~ school
Hispanic (2025)61st percentile-10 vs school
Disabled (2025)58th percentile-12 vs school
White (2025)52nd percentile-18 vs school
Special Education (2025)47th percentile-24 vs school
Asian (2025)37th percentile-33 vs school
By subject vs Illinois (2024-2025) ?
English Language Arts62%+9 vs state
Science54%+13 vs state
Mathematics48%+10 vs state

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Schools Near Southbury Elementary School

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Frequently Asked Questions about Southbury Elementary School

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

Middle : Traughber Junior High School
High : Oswego High School

Southbury Elementary School ranks 604th of 2056 Illinois elementary schools. SchoolDigger rates this school 4 stars out of 5.

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

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

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Latest Illinois data All new data »
2024–25 school spending dataOct 30, 2025
2024–25 attendance data, dropout rates & graduation ratesOct 30, 2025
2024–25 ACT, IAR, ISA & PreACT Secure test scoresOct 30, 2025
2023–24 school spending dataOct 30, 2024


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.

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