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If you had an hour of school board time for Southbury Elem School, what would you bring up?
Community prompt from u/allk12. Replies below.
Enrollment
676
Elementary
DISTRICT 529 · STATE 381
SCHOOL COMMUNITY·CUSD 308·NCES 173027006004
Southbury Elementary School
820 Preston Ln, Oswego, IL 60543 · (630) 551-9800 · Kendall County
GRADES KG–05ELEMENTARY21-SUBURBREGULAR SCHOOL676 STUDENTS
Student : Teacher
15.9:1
43 FTE teachers
DISTRICT 14.5:1 · STATE 13.9:1
Free / Reduced Lunch
26%
173 students
DISTRICT 31% · STATE 56%
Community
5
0 members
Enrollment and student:teacher ratio compared against other elementary schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Pre-K | 3 | 0% |
| Kindergarten | 111 | 16% |
| Grade 1 | 109 | 16% |
| Grade 2 | 97 | 14% |
| Grade 3 | 110 | 16% |
| Grade 4 | 122 | 18% |
| Grade 5 | 124 | 18% |
This year's kindergarten class (111) is 10% smaller than its 5th grade class (124).
Student demographics
66%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 68% · STATE 69% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
IAR + ISA 2024-25 . % Proficient (Levels 4-5)English Language Arts
61.8%
IL avg 51.0% . +17.7pp since 2023
Math
48.1%
IL avg 37.9% . +15.2pp since 2023
What this means: On the IAR + ISA, Illinois's statewide test, about 62 of every 100 students at this school read and write at grade level and about 48 of 100 do math at grade level. Across all Illinois schools, those numbers are about 51 and 38. Reading and writing scores are up about 18 points since 2023, while math scores are up about 15 points.
IAR + ISA results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 61.8% | 48.1% |
| 2023-24 | 44.1% | 32.9% |
% Proficient (Levels 4-5), all students and all tested grades.
Source: IAR + ISA. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
53.6%
composite math + reading, all grades
Predicted
56.7%
based on IL schools with similar FRL share
Beats by
-3.2pp
below demographic expectation
What this means: About 54% of students here test proficient in math and reading, compared with the roughly 57% typical for Illinois schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Illinois's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Southbury Elementary School
Southbury Elementary School's state test result (53.6% proficient) is higher than 0 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Southbury Elementary School this school | 676 | 25.6% | 53.6% |
| Wallin Oaks Elementary School Plainfield | 677 | 24.8% | 55.7% |
| Grande Park Elementary School Plainfield | 687 | 24.5% | 53.9% |
| Millburn Elementary School Old Mill Creek | 711 | 20.5% | 63.9% |
| Lincoln Elementary Plainfield | 536 | 21.8% | 69.7% |
| Briar Glen Elementary School Wheaton | 523 | 28.5% | 64.7% |
Matched among Illinois elementary schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Southbury Elementary School ranks
Among elementary schools| Measure | This school | In Illinois | In Kendall County |
|---|---|---|---|
| State test proficiency ranked highest first | 53.6% | #484 of 1,925 | #7 of 22 |
| Math proficiency ranked highest first | 48.1% | #725 of 2,077 ▼ 6 | #13 of 22 ▼ 6 |
| Reading proficiency ranked highest first | 61.8% | #618 of 2,077 ▲ 46 | #8 of 22 ▼ 1 |
| Enrollment ranked largest first | 676 | #154 of 2,419 | #5 of 25 |
| Students per teacher ranked fewest first | 15.9:1 | #1,709 of 2,035 | #15 of 21 |
| Diversity index ranked most diverse first | 66.0% | #305 of 2,042 | #6 of 21 |
| Free and reduced lunch ranked highest share first | 25.6% | #1,857 of 2,132 | #16 of 23 |
| Enrollment change since 2017-18 ranked fastest growth first | +16.8% | #153 of 615 | #5 of 11 |
Ranked against other public elementary schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
676
+148 (+28%) vs 2020
-8% since 2010-11, when it was 734
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 676 | 42.5 | 15.9:1 | 26% (173) |
| 2023-24 | 605 | 39 | 15.5:1 | 21% (126) |
| 2022-23 | 581 | 42 | 13.8:1 | 21% (122) |
| 2020-21 | 528 | N/A | N/A | N/A |
| 2017-18 | 579 | 40.1 | 14.4:1 | 15% (85) |
| 2015-16 | 611 | 34 | 18.0:1 | 22% (135) |
| 2010-11 | 734 | 35 | 21.0:1 | 25% (182) |
Source: NCES Common Core of Data. Rows are the federal collections on file for Southbury Elementary School.
Since 2017-18: students up 17% (579 to 676); teachers up 6% (40.1 to 42.5).
About Southbury Elementary School
At 820 Preston Ln in Oswego, Illinois, Southbury Elementary School operates as a large elementary school. The grade span is kindergarten through 5, and enrollment is 676 students. Average enrollment for elementary schools in Illinois is about 381, so this school runs 77% bigger than that.
CUSD 308 enrolls 16,766 students in 21 schools, including Southbury Elementary School.
Southbury Elementary School's enrollment is 53% White. The remaining shares are 16% Hispanic, 14% Asian, 11% Black, and 6% multiracial. Census estimates put the White share of Kendall County's population at about 65%. Southbury Elementary School has a diversity index of 66%, compared with 70% for all US public school students.
Its 42.5 full-time-equivalent teachers give the school a ratio of 15.9:1. The average ratio among elementary schools in Illinois is 13.9:1, lower than at this school. The school's lunch program data list 26% of students as eligible for free or reduced-price meals.
Southbury Elementary School sits between the top and bottom 10% of Illinois schools on BeatsExpectations, with an actual average proficiency rate on state tests of 53.6% and a predicted 56.7%.
Kendall County has about 137,675 residents, and median household income is about $111,601, about 37% of adults have at least a bachelor's degree, and roughly 5% of residents are in poverty. Federal data list 50 public schools in Kendall County, with a combined enrollment of about 29,773.
The closest public school to Southbury Elementary School is Traughber Jr High School, about 0.8 miles away. Other public schools within five miles number at least 8. Among 8 nearby schools that report test results, Southbury Elementary School ranks 3rd on proficiency.
The federal government classifies Southbury Elementary School's location as Suburb: Large.
Federal counts put enrollment at 528 in 2020-21 and 676 in 2024-25, a 28% gain.
Community posts for Southbury Elementary School can cover science fairs, picture day, and bus routes. Questions from prospective families are welcome too.
Kendall County at a glance
View full county profilePopulation
137,675
Census ACS
Median income
$111,601
Household, ACS
Bachelor's+
37%
Adults 25+
Poverty rate
5%
Below federal line
Schools in county
50
29,773 students
Quick facts
Related schools
Other schools in CUSD 308
- Oswego High SchoolHigh · 2,870 students
- Oswego East High SchoolHigh · 2,758 students
- Traughber Jr High SchoolMiddle · 1,070 students
- Thompson Jr High SchoolMiddle · 832 students
- Lakewood Creek ElementaryElementary · 767 students
- Murphy Junior High SchoolMiddle · 700 students
Other schools in Oswego
- Oswego High SchoolHigh · 2,870 students
- Oswego East High SchoolHigh · 2,758 students
- Traughber Jr High SchoolMiddle · 1,070 students
- Thompson Jr High SchoolMiddle · 832 students
- Fox Chase Elementary SchoolElementary · 661 students
- Plank Junior HighMiddle · 595 students
Nearby schools
- Traughber Jr High School0.8 mi · 1,070
- Oswego High School0.8 mi · 2,870
- Thompson Jr High School1.2 mi · 832
- Prairie Point Elementary School1.3 mi · 455
- Old Post Elementary School1.7 mi · 387
- Plank Junior High1.7 mi · 595
Frequently asked questions
About Southbury Elementary SchoolHow many students attend Southbury Elementary School?
Southbury Elementary School enrolls approximately 676 students in grades KG-05.
What grades does Southbury Elementary School serve?
Southbury Elementary School serves grades KG-05.
How many teachers does Southbury Elementary School have?
Southbury Elementary School employs 43 FTE teachers, for a student-to-teacher ratio of 15.9:1.
What is the student diversity at Southbury Elementary School?
Student demographics at Southbury Elementary School are roughly 53% White, 16% Hispanic, 11% Black, 14% Asian, 6% Two or more.
What district is Southbury Elementary School in?
Southbury Elementary School is part of CUSD 308.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.