Enrollment
280
Illinois · 2024-25 NCES data
Middle school (grades 6-8) · Mundelein, IL
West Oak Middle School
Federal NCES profile for West Oak Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 42/100.
2024-25 NCES dataMiddle school (grades 6-8)NCES 171221001475
👥 S:T ratio 63
🌟 Gifted program 30
🎓 Counselors 44
📋 Attendance 30
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
West Oak Middle School earns 42/100 on the Resource Investment Index, with class sizes smaller than 94% of Illinois schools.
- #3 of 3
- middle schools in Mundelein · Resource Index
- 42
- Resource Index · Typical
- 9.3:1
- small classes for Illinois
- 280
- students enrolled
West Oak Middle School has class sizes smaller than 94% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, West Oak Middle School ranks #3 of 3 middle schools in Mundelein, IL.
School address
District: Diamond Lake Sd 76 · Illinois
NCES ID 171221001475 Verify on NCES CCD record →
Teachers (FTE)
30.0
Federal CCD staff survey
Students per teacher
9.3:1
vs 14:1 Illinois avg
-34% vs state
Student-teacher ratio in context
How West Oak Middle School compares with Illinois and U.S. medians
What stands out at West Oak Middle School
West Oak Middle School is a mid-sized middle school in Mundelein, Illinois, enrolling 280 students.
Classes run notably small here: at 9.3:1, West Oak Middle School is leaner than roughly 94% of Illinois schools and 34% under the state's 14:1 norm, more adult attention per pupil than most peers.
Enrollment of 280 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index sits near the middle of the pack among 3,845 scored Illinois schools.
Its student body is led by Hispanic or Latino (68%) and White (20%) (diversity index 49/100).
Counselor coverage runs a bit thin, about 280 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 28.2% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
The surrounding Diamond Lake Sd 76 spends $20,419 per pupil, 20% above the Illinois average, a better-resourced district than most.
Among Mundelein's middle schools, it stands alongside Fremont Jr High/Middle School (692 students): West Oak Middle School is smaller than that campus by headcount and runs leaner classes (9.3:1 vs 13.6:1).
Diamond Lake Sd 76 also operates West Oak Intermediate School (268 students) and Diamond Lake School (262 students) alongside West Oak 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
How West Oak Middle School compares
West Oak 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 | 9.3:1 | ▼ 34% | 14:1 | 15.7:1 |
| Enrollment | 280 | top 68% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.3:1
Leaner classes than 92% of US schools, among the more generously staffed nationally.
280
Bigger than 29% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
9.3:1
students per teacher
- 34% below state mean
Top 6% in Illinois - lower ratio than 94% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
28.2%
chronically absent (missed 10%+ of school days)
At or above 20%, the commonly used threshold for "high" chronic absenteeism, signaling significant barriers to regular attendance.
Funding equity
$20,419
per pupil, district-wide
- above Illinois avg of $17,042
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors1.0 FTE
Per 280 students, the combined health-and-guidance staffing load for this school.
Discipline context
18
in-school suspensions + 26 out-of-school
Suspension rate: 6.4 per 100 students. Combined in-school and out-of-school rate: 15.7 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
Hispanic or Latino 67.9%
White 20.0%
Asian 5.0%
African American 3.9%
Two or More 2.9%
American Indian / Alaska Native 0.4%
Largest group: Hispanic or Latino at 67.9% of enrollment.
Student-body diversity index 49.4/100
Simpson diversity index - at 49.4, West Oak Middle School is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Diamond Lake Sd 76, which includes West Oak Middle School.
$20,419
Per student
+20%
vs Illinois
Avg $17,042
+23%
vs U.S.
Avg $16,593
Revenue mix
Local 63.9%
State 23.0%
Federal 13.1%
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 West Oak Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| West Oak Intermediate School | Similar size | No free-lunch data | Similar S:T ratio |
| Diamond Lake School | Similar size | No free-lunch data | Lower S:T ratio |
Comparisons are relative to West Oak Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 268
- Students per teacher
- 9.9:1
- Resource Index
- 42/100
- Enrollment
- 262
- Students per teacher
- 7.5:1
- Resource Index
- 38/100
Similar middle schools in Mundelein
2 comparable middle schools (grades 6-8) serving the same city.
Similar middle schools statewide
Matched by enrollment size and by staffing ratio across all of Illinois, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~280 students)
Next steps
Verify locally before acting on West Oak Middle School's federal record.
- Compare West Oak Middle School against another school. Compare schools
- Diamond Lake Sd 76'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 West Oak Middle School
How many students attend West Oak Middle School?
West Oak Middle School has 280 students enrolled. It is a middle school in Mundelein, IL.
What is the student-teacher ratio at West Oak Middle School?
The student-teacher ratio at West Oak Middle School is 9.3:1, which is 34% lower than the Illinois average of 14:1 and 41% lower than the national average of 15.7:1. Lower ratios generally mean more individual attention per student.
What is the racial and ethnic makeup of West Oak Middle School?
The largest demographic group at West Oak Middle School is Hispanic or Latino at 67.9% of enrollment, in Mundelein, IL.
What is the Resource Investment Index for West Oak Middle School?
West Oak Middle School has a Resource Investment Index of 42/100 (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 West Oak Middle School rank among middle schools in Mundelein?
By Resource Investment Index, West Oak Middle School ranks #3 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.
Is West Oak Middle School a good school?
West Oak Middle School earns 42/100 on the Resource Investment Index, with class sizes smaller than 94% 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.
What other schools are in Diamond Lake Sd 76?
Besides West Oak Middle School, Diamond Lake Sd 76 also operates West Oak Intermediate School (268 students) and Diamond Lake School (262 students). See the Diamond Lake Sd 76 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.