Enrollment
529
Illinois · 2024-25 NCES data
Middle school (grades 6-8) · Mundelein, IL
Federal NCES profile for Carl Sandburg Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 59/100.
The verdict
Carl Sandburg Middle School earns 59/100 on the Resource Investment Index, with class sizes smaller than 73% of Illinois schools.
Carl Sandburg Middle School has class sizes smaller than 73% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Carl Sandburg Middle School ranks #1 of 3 middle schools in Mundelein, IL.
NCES ID 172754002914 Verify on NCES CCD record →
Enrollment
529
Illinois · 2024-25 NCES data
Teachers (FTE)
45.0
Federal CCD staff survey
Students per teacher
12:1
vs 14:1 Illinois avg
-14% vs state
How Carl Sandburg Middle School compares with Illinois and U.S. medians
Smaller classes than state median
12:1 - 2.0 below the Illinois state median of 14:1, indicating smaller average class loads than typical schools in the state.
Carl Sandburg Middle School is a mid-sized middle school in Mundelein, Illinois, enrolling 529 students.
Class sizes run a bit leaner than typical: 12:1 puts it in the smaller third of Illinois schools by student-teacher ratio.
Enrollment of 529 puts it in the larger third of Illinois schools by headcount.
Its Resource Investment Index outscores 93% of the 3,845 Illinois schools with a score on record, a top-tier result on this measure.
Its student body is led by Hispanic or Latino (56%) and White (33%) (diversity index 57/100).
Attendance runs somewhat below the norm, with 18.0% of students chronically absent per the 2021-22 civil-rights collection.
Among Mundelein's middle schools, it stands alongside Fremont Jr High/Middle School (692 students): Carl Sandburg Middle School is smaller than that campus by headcount and runs leaner classes (12:1 vs 15:1).
Mundelein Esd 75 also operates Mechanics Grove Elem School (486 students) and Washington Elem School (467 students) alongside Carl Sandburg Middle School.
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
Carl Sandburg Middle School on the metrics families compare, against Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12:1 | ▼ 14% | 14:1 | 15.7:1 |
| Enrollment | 529 | top 27% | - | - |
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: Hispanic or Latino at 56.1% of enrollment.
Simpson diversity index - at 57.2, Carl Sandburg Middle School is more mixed than the Illinois school average of 38.9.
District-wide per-pupil expenditure for Mundelein Esd 75, which includes Carl Sandburg Middle School.
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 |
|---|---|---|---|
| Mechanics Grove Elem School | Similar size | No free-lunch data | Higher S:T ratio |
| Washington Elem School | Similar size | No free-lunch data | Similar S:T ratio |
| Lincoln Elem School | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Carl Sandburg Middle School's own figures; each column derives from NCES Common Core of Data.
2 comparable middle schools (grades 6-8) serving the same city.
Next steps
Verify locally before acting on Carl Sandburg Middle School'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.
Carl Sandburg Middle School has 529 students enrolled. It is a middle school in Mundelein, IL.
The student-teacher ratio at Carl Sandburg Middle School is 12:1, which is 14% lower than the Illinois average of 14:1 and 24% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
The largest demographic group at Carl Sandburg Middle School is Hispanic or Latino at 56.1% of enrollment, in Mundelein, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 57.2/100.
Carl Sandburg Middle School has a Resource Investment Index of 59/100 (higher reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
By Resource Investment Index, Carl Sandburg Middle School ranks #1 of 3 middle schools in Mundelein, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all middle schools in Mundelein on the city page.
Carl Sandburg Middle School earns 59/100 on the Resource Investment Index, with class sizes smaller than 73% of Illinois 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.
Besides Carl Sandburg Middle School, Mundelein Esd 75 also operates Mechanics Grove Elem School (486 students), Washington Elem School (467 students), and Lincoln Elem School (88 students). See the Mundelein Esd 75 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, “Carl Sandburg Middle School, Mundelein IL.” 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/carl-sandburg-middle-school-il
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