- Enrollment
- 407
- Students per teacher
- 10.4:1
- Resource Index
- 58/100
Other / mixed grade configuration · Darien, IL
Mark Delay School
Federal NCES profile for Mark Delay School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 39/100.
2024-25 NCES dataOther / mixed grade configurationNCES 172145002413
👥 S:T ratio 51
🌟 Gifted program 30
📋 Attendance 35
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Mark Delay School earns 39/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools.
- #2 of 3
- schools in Darien · Resource Index
- 39
- Resource Index · Typical
- 12.2:1
- students per teacher
- 453
- students enrolled
Mark Delay School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Mark Delay School ranks #2 of 3 schools in Darien, IL.
School address
CCD year-over-year · 2022-23 → 2023-24
-9 students YoY
Mark Delay School held near 457 students from 2022-23 to 2023-24 (-9 headcount).
Teacher FTE held 37.1 → 37.1 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
-9 students YoY 172145002413 · Darien, IL Other · SMALL · TRAD
453 enr · 12.2:1 · RII 39
Nearest enrollment peer: Eisenhower Jr High School (407 students)
Mark Delay School held near 457 students from 2022-23 to 2023-24 (-9 headcount). Teacher FTE held 37.1 → 37.1 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Mark Delay School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Mark Delay School
453 students
- Eisenhower Jr
Eisenhower Jr High School
407 students
- Lace Elem Scho
Lace Elem School
377 students
What this shows Mark Delay School reports 453 students on the CCD universe file.
How Mark Delay School compares
Mark Delay School held steady on CCD headcount: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 12.2:1 | ▼ 13% | 14:1 | 15.7:1 |
| Enrollment | 453 | top 37% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
12.2:1
Leaner classes than 74% of US schools, among the more generously staffed nationally.
453
Bigger than 55% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
12.2:1
students per teacher
- 13% below state mean
Top 31% in Illinois - lower ratio than 69% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
26.0%
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
$26,616
per pupil, district-wide
- above Illinois avg of $18,196
Well above the U.S. public-school average, reflecting substantially higher local or state investment per enrolled student.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
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.
Student demographics
White 55.8%
Hispanic or Latino 19.4%
African American 11.7%
Two or More 6.6%
Asian 6.4%
Largest group: White at 55.8% of enrollment.
Student-body diversity index 62.9/100
Simpson diversity index - at 62.9, Mark Delay School is more mixed than the Illinois school average of 38.9.
Programs
District finance for Darien Sd 61 reports $26,616 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Mark Delay School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Eisenhower Jr High School | Similar size | No free-lunch data | Lower S:T ratio |
| Lace Elem School | Similar size | No free-lunch data | Similar S:T ratio |
Comparisons are relative to Mark Delay School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 377
- Students per teacher
- 11.1:1
- Resource Index
- 47/100
Similar other schools in Darien
2 comparable other schools (grades Mixed) serving the same city.
Nationwide other schools with similar size or staffing
Out-of-state peers matched by enrollment and by student-teacher ratio, not the same-city or same-district lists above.
Similar enrollment (~453 students)
Similar student-teacher ratio (~12.2:1)
Frequently asked questions about Mark Delay School
How many students attend Mark Delay School?
Mark Delay School has 453 students enrolled. It is a public school in Darien, IL. CCD year-over-year: 466 (2022-23) → 457 (2023-24), nearly flat (-9).
What is the student-teacher ratio at Mark Delay School?
The student-teacher ratio at Mark Delay School is 12.2:1, which is 13% lower than the Illinois average of 14:1 and 22% 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 Mark Delay School?
The largest demographic group at Mark Delay School is White at 55.8% of enrollment, in Darien, IL. Its student body is more racially and ethnically mixed than most US schools, with a diversity index of 62.9/100.
What is the Resource Investment Index for Mark Delay School?
Mark Delay School has a Resource Investment Index of 39/100 (typical reported resources relative to schools nationally) based on 3 factors: student-teacher ratio, gifted-program reporting, chronic absenteeism. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Mark Delay School rank among schools in Darien?
By Resource Investment Index, Mark Delay School ranks #2 of 3 schools in Darien, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all schools in Darien on the city page.
What other schools are in Darien Sd 61?
Besides Mark Delay School, Darien Sd 61 also operates Eisenhower Jr High School (407 students) and Lace Elem School (377 students). See the Darien Sd 61 district page for the complete list.