- Enrollment
- 888
- Students per teacher
- 16.4:1
- Resource Index
- 21/100
Elementary school (grades K-5) · Mattoon, IL
Riddle Elementary School
Federal NCES profile for Riddle Elementary School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 33/100.
2024-25 NCES dataElementary school (grades K-5)NCES 172505005655
👥 S:T ratio 44
🌟 Gifted program 30
📋 Attendance 24
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Riddle Elementary School earns 33/100 on the Resource Investment Index, with class sizes near the Illinois median.
- #1 of 5
- public schools in Mattoon · Resource Index
- 33
- Resource Index · Typical
- 14:1
- students per teacher
- 589
- students enrolled
Riddle Elementary School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Riddle Elementary School ranks #1 of 5 public schools in Mattoon, IL.
School address
District: Mattoon Cusd 2 · Illinois
NCES ID 172505005655 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
-47 students YoY
Riddle Elementary School shrank from 616 students in 2022-23 to 569 in 2023-24 (-7.6%).
Teacher FTE added 42.5 → 44.5 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Shrinking CCD campus
-47 students YoY 172505005655 · Mattoon, IL Elementary · MID · TRAD
589 enr · 14:1 · RII 33
Nearest enrollment peer: Mattoon High School (888 students)
Riddle Elementary School shrank from 616 students in 2022-23 to 569 in 2023-24 (-7.6%). Teacher FTE added 42.5 → 44.5 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Riddle Elementary School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Mattoon High S
Mattoon High School
888 students
- Arland D Willi
Arland D Williams Jr Elem Sch
653 students
- Mattoon Middle
Mattoon Middle School
610 students
- This school
Riddle Elementary School
589 students
- Franklin Eleme 243
Franklin Elementary School
243 students
What this shows Riddle Elementary School reports 589 students on the CCD universe file.
How Riddle Elementary School compares
Riddle Elementary School is a shrinking campus on CCD: ratios and free-lunch share vs Illinois and U.S. means.
| Metric | This school | vs Illinois | Illinois avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 14:1 | ▼ 0% | 14:1 | 15.7:1 |
| Enrollment | 589 | top 21% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14:1
Leaner classes than 57% of US schools, a middle-of-the-pack class size.
589
Bigger than 72% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
14:1
students per teacher
- 0% above state mean
Top 56% in Illinois - lower ratio than 44% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
30.4%
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
$15,923
per pupil, district-wide
- below Illinois avg of $18,196
Somewhat below the U.S. average per-pupil spend; funding constraints may affect programs, facilities, and staffing.
Support staff
Counselors0.0 FTE
Student-support staffing from the Civil Rights Data Collection.
Discipline context
20
in-school suspensions + 33 out-of-school
Suspension rate: 3.4 per 100 students. Combined in-school and out-of-school rate: 9.0 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 79.1%
Two or More 10.4%
Hispanic or Latino 6.6%
African American 3.6%
Asian 0.2%
Native Hawaiian / Pacific Islander 0.2%
Largest group: White at 79.1% of enrollment.
Student-body diversity index 35.8/100
Simpson diversity index - at 35.8, Riddle Elementary School is less mixed than the Illinois school average of 38.9.
Programs
District finance for Mattoon Cusd 2 reports $15,923 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Riddle Elementary School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Mattoon High School | Larger | No free-lunch data | Higher S:T ratio |
| Arland D Williams Jr Elem Sch | Similar size | No free-lunch data | Similar S:T ratio |
| Mattoon Middle School | Similar size | No free-lunch data | Lower S:T ratio |
| Franklin Elementary School | Smaller | No free-lunch data | No ratio data |
Comparisons are relative to Riddle Elementary School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 653
- Students per teacher
- 14.2:1
- Resource Index
- 24/100
- Enrollment
- 610
- Students per teacher
- 12.4:1
- Resource Index
- 27/100
- Enrollment
- 243
- Students per teacher
- -
- Resource Index
- 30/100
Similar elementary schools in Mattoon
1 comparable elementary schools (grades K-5) serving the same city.
Nationwide elementary 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 (~589 students)
Frequently asked questions about Riddle Elementary School
How many students attend Riddle Elementary School?
Riddle Elementary School has 589 students enrolled. It is an elementary school in Mattoon, IL. CCD year-over-year: 616 (2022-23) → 569 (2023-24), down 47.
What is the student-teacher ratio at Riddle Elementary School?
The student-teacher ratio at Riddle Elementary School is 14:1, which is 0% higher than the Illinois average of 14:1 and 11% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Riddle Elementary School?
The largest demographic group at Riddle Elementary School is White at 79.1% of enrollment, in Mattoon, IL.
What is the Resource Investment Index for Riddle Elementary School?
Riddle Elementary School has a Resource Investment Index of 33/100 (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 Riddle Elementary School rank among public schools in Mattoon?
By Resource Investment Index, Riddle Elementary School ranks #1 of 5 public schools in Mattoon, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Mattoon on the city page.
What other schools are in Mattoon Cusd 2?
Besides Riddle Elementary School, Mattoon Cusd 2 also operates Mattoon High School (888 students), Arland D Williams Jr Elem Sch (653 students), and Mattoon Middle School (610 students). See the Mattoon Cusd 2 district page for the complete list.