Enrollment
258
Illinois · 2024-25 NCES data
Elementary school (grades K-5) · Peoria, IL
Mark W Bills Middle School
Federal NCES profile for Mark W Bills Middle School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 25/100.
2024-25 NCES dataElementary school (grades K-5)NCES 173123005336
👥 S:T ratio 21
🌟 Gifted program 30
🎓 Counselors 48
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mark W Bills Middle School earns 25/100 on the Resource Investment Index, with class sizes larger than 95% of Illinois schools.
- #16 of 21
- elementary schools in Peoria · Resource Index
- 25
- Resource Index · Lower
- 19.8:1
- large classes for Illinois
- 258
- students enrolled
Mark W Bills Middle School has class sizes larger than 95% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Mark W Bills Middle School ranks #16 of 21 elementary schools in Peoria, IL.
School address
District: Peoria Sd 150 · Illinois
NCES ID 173123005336 Verify on NCES CCD record →
Teachers (FTE)
13.0
Federal CCD staff survey
Students per teacher
19.8:1
vs 14:1 Illinois avg
+41% vs state
Student-teacher ratio in context
How Mark W Bills Middle School compares with Illinois and U.S. medians
What stands out at Mark W Bills Middle School
Teacher staffing is the clearest operational constraint
Mark W Bills Middle School's enrollment sits away from the most extreme size bands, but its reported student-teacher ratio is heavier than most Illinois schools. That isolates staffing load as a more useful concern than raw campus size. A high ratio does not establish weak teaching or outcomes, yet it can indicate less adult capacity per enrolled student. The remaining federal indicators show whether support staffing and program access offset that pressure.
Attendance is the dominant support signal
Mark W Bills Middle School's 45.0% chronic-absence rate is more consequential than a generic staffing label: at least one quarter of students missed 10% or more of school days in the 2021-22 collection. That level can affect instruction, counseling demand, and continuity even when other reported resources look ordinary. The dataset records the scale of absence but not its causes, so it should prompt a current-year question rather than a conclusion about school management.
Mark W Bills Middle School is a mid-sized elementary school in Peoria, Illinois, enrolling 258 students.
Class loads run heavy: 19.8:1 is larger than about 95% of Illinois schools and 41% above the 14:1 state mean, so each teacher carries more students than is typical.
Enrollment of 258 puts it in the smaller third of Illinois schools by headcount.
Its Resource Investment Index lands in the lower third of 3,845 scored Illinois schools.
Its student body is led by African American (61%) and White (21%) (diversity index 57/100).
Counselor coverage runs a bit thin, about 258 students per counselor, somewhat past the ASCA-recommended 250:1 benchmark.
Chronic absenteeism is elevated: 45.0% of students missed 10% or more of school days (2021-22 Civil Rights Data Collection).
Its district draws 17.7% of revenue from federal sources, an above-typical federal share that tends to track a higher-need student population.
The federal civil-rights collection also records 1 expulsion at this campus for 2021-22.
Among Peoria's elementary schools, it stands alongside Lincoln School (823 students): Mark W Bills Middle School is smaller than that campus by headcount and runs heavier classes (19.8:1 vs 16.8:1).
Peoria Sd 150 also operates Richwoods High School (1,685 students) and Peoria High School (1,541 students) alongside Mark W Bills 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 Mark W Bills Middle School compares
Mark W Bills 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 | 19.8:1 | ▲ 41% | 14:1 | 15.7:1 |
| Enrollment | 258 | top 72% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
19.8:1
Leaner classes than 17% of US schools, heavier class loads than most.
258
Bigger than 26% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Staffing depth
19.8:1
students per teacher
- 41% above state mean
Top 95% in Illinois - lower ratio than 5% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
45.0%
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
$16,851
per pupil, district-wide
- below Illinois avg of $17,042
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 258 students, the combined health-and-guidance staffing load for this school.
Discipline context
3
in-school suspensions + 18 out-of-school
Suspension rate: 1.2 per 100 students. Combined in-school and out-of-school rate: 8.1 per 100 students. Reported via the Civil Rights Data Collection. Includes 1 expulsion.
Student demographics
African American 60.5%
White 20.9%
Two or More 10.1%
Hispanic or Latino 8.1%
Asian 0.4%
Largest group: African American at 60.5% of enrollment.
Student-body diversity index 57.4/100
Simpson diversity index - at 57.4, Mark W Bills Middle School is more mixed than the Illinois school average of 38.9.
Programs
Funding & spending
District-wide per-pupil expenditure for Peoria Sd 150, which includes Mark W Bills Middle School.
$16,851
Per student
-1%
vs Illinois
Avg $17,042
+2%
vs U.S.
Avg $16,593
Revenue mix
Local 41.8%
State 40.4%
Federal 17.7%
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 Mark W Bills Middle School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Richwoods High School | Larger | No free-lunch data | Higher S:T ratio |
| Peoria High School | Larger | No free-lunch data | Similar S:T ratio |
| Lincoln School | Larger | No free-lunch data | Lower S:T ratio |
| Glen Oak Comm Learning Cntr | Larger | No free-lunch data | Higher S:T ratio |
| Manual High School | Larger | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Mark W Bills Middle School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,685
- Students per teacher
- 21.9:1
- Resource Index
- 31/100
- Enrollment
- 1,541
- Students per teacher
- 20.8:1
- Resource Index
- 27/100
- Enrollment
- 823
- Students per teacher
- 16.8:1
- Resource Index
- 20/100
- Enrollment
- 794
- Students per teacher
- 22.7:1
- Resource Index
- 15/100
- Enrollment
- 731
- Students per teacher
- 18.7:1
- Resource Index
- 37/100
Similar elementary schools in Peoria
6 comparable elementary schools (grades K-5) serving the same city.
Lincoln School
Standard public school
823 students 16.8:1 students per teacher
Glen Oak Comm Learning Cntr
Standard public school
794 students 22.7:1 students per teacher
The Elise Ford Allen Academy
Standard public school
642 students 16.1:1 students per teacher
Annie Jo Gordon Comm Lrning Cntr
Standard public school
542 students 13.6:1 students per teacher
Dr Maude a Sanders Primary School
Standard public school
442 students 17:1 students per teacher
Ridgeview Elementary School
Standard public school
433 students 17.3:1 students per teacher
Similar elementary 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 (~258 students)
Next steps
Verify locally before acting on Mark W Bills Middle School's federal record.
- Compare Mark W Bills Middle School against another school. Compare schools
- Peoria Sd 150'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 Mark W Bills Middle School
How many students attend Mark W Bills Middle School?
Mark W Bills Middle School has 258 students enrolled. It is an elementary school in Peoria, IL.
What is the student-teacher ratio at Mark W Bills Middle School?
The student-teacher ratio at Mark W Bills Middle School is 19.8:1, which is 41% higher than the Illinois average of 14:1 and 26% higher than the national average of 15.7:1.
What is the racial and ethnic makeup of Mark W Bills Middle School?
The largest demographic group at Mark W Bills Middle School is African American at 60.5% of enrollment, in Peoria, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 57.4/100.
What is the Resource Investment Index for Mark W Bills Middle School?
Mark W Bills Middle School has a Resource Investment Index of 25/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, gifted-program reporting, counselor availability, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mark W Bills Middle School rank among elementary schools in Peoria?
By Resource Investment Index, Mark W Bills Middle School ranks #16 of 21 elementary schools in Peoria, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all elementary schools in Peoria on the city page.
What other schools are in Peoria Sd 150?
Besides Mark W Bills Middle School, Peoria Sd 150 also operates Richwoods High School (1,685 students), Peoria High School (1,541 students), and Lincoln School (823 students). See the Peoria Sd 150 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 July 2026.