- Enrollment
- 172
- Students per teacher
- 9.1:1
- Resource Index
- 42/100
Elementary school (grades K-5) · Mason City, IL
Illini Central Grade School
Federal NCES profile for Illini Central Grade School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 41/100.
2024-25 NCES dataElementary school (grades K-5)NCES 170011305388
👥 S:T ratio 61
🌟 Gifted program 30
🎓 Counselors 47
📋 Attendance 27
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Illini Central Grade School earns 41/100 on the Resource Investment Index, with class sizes smaller than 91% of Illinois schools. It is also less racially and ethnically mixed than most Illinois schools.
- #4 of 4
- public schools in Mason City · Resource Index
- 41
- Resource Index · Typical
- 9.8:1
- small classes for Illinois
- 264
- students enrolled
Illini Central Grade School has class sizes smaller than 91% of Illinois schools. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Illini Central Grade School ranks #4 of 4 public schools in Mason City, IL.
School address
District: Illini Central Cusd 189 · Illinois
NCES ID 170011305388 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+3 students YoY
Illini Central Grade School held near 255 students from 2022-23 to 2023-24 (+3 headcount).
Teacher FTE lost 27.1 → 26.0 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+3 students YoY 170011305388 · Mason City, IL Elementary · SMALL · TRAD
264 enr · 9.8:1 · RII 41
Nearest enrollment peer: Illini Central High School (172 students)
Illini Central Grade School held near 255 students from 2022-23 to 2023-24 (+3 headcount). Teacher FTE lost 27.1 → 26.0 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Illini Central Grade School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Illini Central Grade School
264 students
- Illini Central
Illini Central High School
172 students
- Illini Central
Illini Central Middle School
139 students
- West Campus Fa 65
West Campus Facility
65 students
What this shows Illini Central Grade School reports 264 students on the CCD universe file.
How Illini Central Grade School compares
Illini Central Grade 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 | 9.8:1 | ▼ 30% | 14:1 | 15.7:1 |
| Enrollment | 264 | top 71% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
9.8:1
Leaner classes than 90% of US schools, among the more generously staffed nationally.
264
Bigger than 27% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
9.8:1
students per teacher
- 30% below state mean
Top 9% in Illinois - lower ratio than 91% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
29.2%
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
$17,704
per pupil, district-wide
- below Illinois avg of $18,196
Close to the U.S. public-school average per-pupil spend.
Support staff
Counselors1.0 FTE
Per 264 students, the combined health-and-guidance staffing load for this school.
Discipline context
0
in-school suspensions + 6 out-of-school
Suspension rate: 0.0 per 100 students. Combined in-school and out-of-school rate: 2.3 per 100 students. Reported via the Civil Rights Data Collection.
Student demographics
White 93.2%
Hispanic or Latino 3.4%
Two or More 3.0%
Asian 0.4%
Largest group: White at 93.2% of enrollment.
Student-body diversity index 12.9/100
Simpson diversity index - at 12.9, Illini Central Grade School is less mixed than the Illinois school average of 38.9.
Programs
District finance for Illini Central Cusd 189 reports $17,704 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Illini Central Grade School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Illini Central High School | Smaller | No free-lunch data | Similar S:T ratio |
| Illini Central Middle School | Smaller | No free-lunch data | Higher S:T ratio |
| West Campus Facility | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Illini Central Grade School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 139
- Students per teacher
- 11.6:1
- Resource Index
- 43/100
- Enrollment
- 65
- Students per teacher
- 21.7:1
- Resource Index
- 43/100
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 (~264 students)
Frequently asked questions about Illini Central Grade School
How many students attend Illini Central Grade School?
Illini Central Grade School has 264 students enrolled. It is an elementary school in Mason City, IL. CCD year-over-year: 252 (2022-23) → 255 (2023-24), nearly flat (+3).
What is the student-teacher ratio at Illini Central Grade School?
The student-teacher ratio at Illini Central Grade School is 9.8:1, which is 30% lower than the Illinois average of 14:1 and 38% 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 Illini Central Grade School?
The largest demographic group at Illini Central Grade School is White at 93.2% of enrollment, in Mason City, IL.
What is the Resource Investment Index for Illini Central Grade School?
Illini Central Grade School has a Resource Investment Index of 41/100 (typical 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 Illini Central Grade School rank among public schools in Mason City?
By Resource Investment Index, Illini Central Grade School ranks #4 of 4 public schools in Mason City, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking.
What other schools are in Illini Central Cusd 189?
Besides Illini Central Grade School, Illini Central Cusd 189 also operates Illini Central High School (172 students), Illini Central Middle School (139 students), and West Campus Facility (65 students). See the Illini Central Cusd 189 district page for the complete list.