Enrollment
431
Wisconsin · 2024-25 NCES data
Middle school (grades 6-8) · Fond Du Lac, WI
Federal NCES profile for Theisen Middle, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 43/100.
The verdict
Theisen Middle earns 43/100 on the Resource Investment Index, with class sizes near the Wisconsin median.
Theisen Middle has class sizes near the Wisconsin median. Computed live against every Wisconsin school reporting to NCES.
By Resource Investment Index, Theisen Middle ranks #2 of 3 middle schools in Fond Du Lac, WI.
NCES ID 550468000505 Verify on NCES CCD record →
Enrollment
431
Wisconsin · 2024-25 NCES data
Teachers (FTE)
33.0
Federal CCD staff survey
Students per teacher
13.1:1
vs 14.4:1 Wisconsin avg
-9% vs state
Free-lunch eligible
35.4%
vs 38.5% Wisconsin avg
-8% vs state
How Theisen Middle compares with Wisconsin and U.S. medians
At or below state median
13.1:1 - 1.3 below the Wisconsin state median of 14.4:1, indicating smaller average class loads than typical schools in the state.
Theisen Middle is a mid-sized middle school in Fond Du Lac, Wisconsin, enrolling 431 students.
At 13.1:1, its student-teacher ratio sits close to the Wisconsin median, within a few percentage points of the 14.4:1 state norm, neither notably crowded nor notably small.
Its free-meal eligibility rate of 35.4% lands close to the Wisconsin typical range, neither a high- nor low-need campus by this measure.
Enrollment of 431 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 500 statewide peers matched on enrollment and economic need, it ranks mid-pack at #261.
Its student body is led by White (64%) and Hispanic or Latino (17%) (diversity index 55/100).
Counselor access is stretched at roughly 431 students per counselor, well above the ASCA-recommended 250:1 ceiling.
Attendance runs somewhat below the norm, with 23.0% of students chronically absent per the 2021-22 civil-rights collection.
Fond Du Lac School District also operates Fond Du Lac High (1,917 students) and Sabish Middle (445 students) alongside Theisen Middle.
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
Theisen Middle on the metrics families compare, against Wisconsin and U.S. means.
| Metric | This school | vs Wisconsin | Wisconsin avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 13.1:1 | ▼ 9% | 14.4:1 | 15.7:1 |
| Free-lunch eligible | 35.4% | ▼ 8% | 38.5% | 51.7% |
| Enrollment | 431 | top 29% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
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.
Largest group: White at 64.3% of enrollment.
Simpson diversity index - at 54.5, Theisen Middle is more mixed than the Wisconsin school average of 35.7.
District-wide per-pupil expenditure for Fond Du Lac School District, which includes Theisen Middle.
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.
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Fond Du Lac High | Larger | Similar economic need | Higher S:T ratio |
| Sabish Middle | Similar size | Higher economic need | Similar S:T ratio |
| Woodworth Middle | Similar size | Similar economic need | Similar S:T ratio |
| Waters Elementary | Similar size | Similar economic need | Similar S:T ratio |
| Lakeshore Elementary | Similar size | Lower economic need | Similar S:T ratio |
Comparisons are relative to Theisen Middle's own figures; each column derives from NCES Common Core of Data.
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.
Next steps
Verify locally before acting on Theisen Middle's federal record.
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.
Theisen Middle has 431 students enrolled. It is a middle school in Fond Du Lac, WI.
The student-teacher ratio at Theisen Middle is 13.1:1, which is 9% lower than the Wisconsin average of 14.4:1 and 17% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
35.4% of students at Theisen Middle are eligible for free lunch, compared to the Wisconsin average of 38.5%.
The largest demographic group at Theisen Middle is White at 64.3% of enrollment, in Fond Du Lac, WI. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 54.5/100.
Theisen Middle has a Resource Investment Index of 43/100 (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).
By Resource Investment Index, Theisen Middle ranks #2 of 3 middle schools in Fond Du Lac, WI. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Fond Du Lac on the city page.
Theisen Middle earns 43/100 on the Resource Investment Index, with class sizes near the Wisconsin median. 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.
Besides Theisen Middle, Fond Du Lac School District also operates Fond Du Lac High (1,917 students), Sabish Middle (445 students), and Woodworth Middle (413 students). See the Fond Du Lac School District district page for the complete list.
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.
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PlainSchools, “Theisen Middle, Fond Du Lac WI.” Compiled from NCES Common Core of Data, Civil Rights Data Collection, and the NCES F-33 finance survey; data as of June 2026. https://plainschools.com/schools/theisen-middle-wi
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