Enrollment
441
Wisconsin · 2024-25 NCES data
Other / mixed grade configuration · Hartford, WI
Addison Elementary
Federal NCES profile for Addison Elementary, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
2024-25 NCES dataOther / mixed grade configurationNCES 551395002540
👥 S:T ratio 32
🌟 Gifted program 30
🎓 Counselors 12
📋 Attendance 89
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Addison Elementary earns 41/100 on the Resource Investment Index, with class sizes larger than 86% of Wisconsin schools.
- #2 of 4
- schools in Hartford · Resource Index
- 41
- Resource Index · Typical
- 17:1
- large classes for Wisconsin
- 14.3%
- free-lunch eligible
Addison Elementary has class sizes larger than 86% of Wisconsin schools. Computed live against every Wisconsin school reporting to NCES.
By Resource Investment Index, Addison Elementary ranks #2 of 4 schools in Hartford, WI.
School address
District: Slinger School District · Wisconsin
NCES ID 551395002540 Verify on NCES CCD record →
Teachers (FTE)
26.0
Federal CCD staff survey
Students per teacher
17:1
vs 14.4:1 Wisconsin avg
+18% vs state
Free-lunch eligible
14.3%
vs 38.5% Wisconsin avg
-63% vs state
Student-teacher ratio in context
How Addison Elementary compares with Wisconsin and U.S. medians
What stands out at Addison Elementary
Addison Elementary is a lower-poverty, mid-sized combined-grade school in Hartford, Wisconsin, enrolling 441 students.
Class loads run heavy: 17:1 is larger than about 86% of Wisconsin schools and 18% above the 14.4:1 state mean, so each teacher carries more students than is typical.
Comparatively few students face economic hardship here, 14.3% free-meal eligibility runs 63% below the Wisconsin average.
Enrollment of 441 puts it in the larger third of Wisconsin schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 2,202 scored Wisconsin schools.
Against 409 statewide peers matched on enrollment and economic need, it ranks mid-pack at #282.
Its student body is predominantly White (88% of enrollment) (diversity index 21/100).
Counselor access is stretched at roughly 441 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance holds up well here: only 4.5% of students were chronically absent, below the typical post-pandemic national figure.
The surrounding Slinger School District spends $11,250 per pupil, 25% below the Wisconsin average, a leaner-resourced district than most.
Among Hartford's public schools, it stands alongside Lincoln Elementary (460 students): Addison Elementary is smaller than that campus by headcount and runs heavier classes (17:1 vs 12.1:1).
Slinger School District also operates Slinger High (1,065 students) and Slinger Middle (740 students) alongside Addison Elementary.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Addison Elementary compares
Addison Elementary on the metrics families compare, against Wisconsin and U.S. means.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17:1 | ▲ 18% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 14.3% | ▼ 63% | 38.5% | 51.7% |
| Enrollment | 441 | top 28% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17:1
Leaner classes than 30% of US schools, heavier class loads than most.
441
Bigger than 54% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
14.3%
free-lunch eligible
- 63% below the Wisconsin average of 38.5%
Below the 40% Title I threshold, among the lower-need profiles in the state; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
17:1
students per teacher
- 18% above state mean
Top 86% in Wisconsin - lower ratio than 14% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
4.5%
chronically absent (missed 10%+ of school days)
Below 5%, comfortably under the pre-pandemic national baseline for chronic absenteeism.
Funding equity
$11,250
per pupil, district-wide
- below Wisconsin avg of $14,919
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
Support staff
Counselors1.0 FTE
Per 441 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 0 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 0.0 per 100 students. Reported via the Civil Rights Data Collection.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 88.4%
Hispanic or Latino 5.0%
Two or More 3.6%
Asian 1.8%
African American 0.9%
American Indian / Alaska Native 0.2%
Largest group: White at 88.4% of enrollment.
Student-body diversity index 21.4/100
Simpson diversity index - at 21.4, Addison Elementary is less mixed than the Wisconsin school average of 35.7.
Programs
Funding & spending
District-wide per-pupil expenditure for Slinger School District, which includes Addison Elementary.
$11,250
Per student
-25%
vs Wisconsin
Avg $14,919
-32%
vs U.S.
Avg $16,593
Revenue mix
Local 50.6%
State 38.6%
Federal 10.9%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Addison Elementary Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Slinger High | Larger | Similar economic need | Similar S:T ratio |
| Slinger Middle | Larger | Similar economic need | Similar S:T ratio |
| Slinger Elementary | Larger | Similar economic need | Similar S:T ratio |
| Allenton Elementary | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Addison Elementary's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,065
- Students per teacher
- 16.9:1
- Resource Index
- 41/100
- Enrollment
- 740
- Students per teacher
- 17.2:1
- Resource Index
- 33/100
- Enrollment
- 571
- Students per teacher
- 16.8:1
- Resource Index
- 36/100
- Enrollment
- 417
- Students per teacher
- 16.7:1
- Resource Index
- 51/100
Similar other schools in Hartford
3 comparable other schools (grades Mixed) serving the same city.
Similar other schools statewide
Matched by enrollment size and by staffing ratio across all of Wisconsin, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~441 students)
Similar student-teacher ratio (~17:1)
Next steps
Verify locally before acting on Addison Elementary's federal record.
- Compare Addison Elementary against another school. Compare schools
- Slinger School District's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Addison Elementary
How many students attend Addison Elementary?
Addison Elementary has 441 students enrolled. It is a public school in Hartford, WI.
What is the student-teacher ratio at Addison Elementary?
The student-teacher ratio at Addison Elementary is 17:1, which is 18% higher than the Wisconsin average of 14.4:1 and 8% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Addison Elementary?
14.3% of students at Addison Elementary are eligible for free lunch, compared to the Wisconsin average of 38.5%.
What is the racial and ethnic makeup of Addison Elementary?
The largest demographic group at Addison Elementary is White at 88.4% of enrollment, in Hartford, WI.
What is the Resource Investment Index for Addison Elementary?
Addison Elementary has a Resource Investment Index of 41/100 (typical reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, counselor availability, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Addison Elementary rank among schools in Hartford?
By Resource Investment Index, Addison Elementary ranks #2 of 4 schools in Hartford, WI. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Hartford on the city page.
Is Addison Elementary a good school?
Addison Elementary earns 41/100 on the Resource Investment Index, with class sizes larger than 86% of Wisconsin schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Slinger School District?
Besides Addison Elementary, Slinger School District also operates Slinger High (1,065 students), Slinger Middle (740 students), and Slinger Elementary (571 students). See the Slinger School District district page for the complete list.
Related tools
Every figure on PlainSchools is rendered directly from the source NCES, CRDC and F-33 federal records, no number is typed in by an editor. Each school's figures reflect its most recent NCES/CRDC submission on file. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of June 2026.