- Enrollment
- 293
- Students per teacher
- 17.2:1
- Resource Index
- 42/100
High school (grades 9-12) · Piasa, IL
Southwestern High School
Federal NCES profile for Southwestern High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 32/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173150003320
👥 S:T ratio 52
🌟 Gifted program 30
📋 Attendance 12
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Southwestern High School earns 32/100 on the Resource Investment Index, with class sizes smaller than 73% of Illinois schools. It is also less racially and ethnically mixed than most Illinois schools.
- 32
- Resource Index · Typical
- 11.9:1
- small classes for Illinois
- 370
- students enrolled
Southwestern High School has class sizes smaller than 73% of Illinois schools. Computed live against every Illinois school reporting to NCES.
School address
District: Southwestern Cusd 9 · Illinois
NCES ID 173150003320 Verify on NCES CCD record →
CCD year-over-year · 2022-23 → 2023-24
+4 students YoY
Southwestern High School held near 376 students from 2022-23 to 2023-24 (+4 headcount).
Teacher FTE held 31.4 → 31.3 across the same CCD years.
Source: NCES Common Core of Data public-school universe (2022-23, 2023-24).
Steady CCD campus
+4 students YoY 173150003320 · Piasa, IL High · SMALL · TRAD
370 enr · 11.9:1 · RII 32
Nearest enrollment peer: Brighton North Primary School (293 students)
Southwestern High School held near 376 students from 2022-23 to 2023-24 (+4 headcount). Teacher FTE held 31.4 → 31.3 across the same CCD years. Read with this school → · District book → · Illinois schools → · Find another →
Southwestern High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- This school
Southwestern High School
370 students
- Brighton North
Brighton North Primary School
293 students
- Southwestern M
Southwestern Middle School
171 students
- Medora Interme
Medora Intermediate School
160 students
- Shipman Elem S
Shipman Elem School
155 students
What this shows Southwestern High School reports 370 students on the CCD universe file.
How Southwestern High School compares
Southwestern High 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 | 11.9:1 | ▼ 15% | 14:1 | 15.7:1 |
| Enrollment | 370 | top 50% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
11.9:1
Leaner classes than 76% of US schools, among the more generously staffed nationally.
370
Bigger than 43% of US schools by enrollment, mid-sized for the country.
Equity indicators methodology
Staffing depth
11.9:1
students per teacher
- 15% below state mean
Top 27% in Illinois - lower ratio than 73% of state schools
Well under the widely cited 15:1 individualized-attention benchmark, among the leaner class loads nationally.
Engagement
35.1%
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
$15,053
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
31
in-school suspensions + 12 out-of-school
Suspension rate: 8.4 per 100 students. Combined in-school and out-of-school rate: 11.6 per 100 students. Reported via the Civil Rights Data Collection. Includes 2 expulsions.
Student demographics
White 94.3%
Hispanic or Latino 2.2%
African American 1.9%
Two or More 1.4%
American Indian / Alaska Native 0.3%
Largest group: White at 94.3% of enrollment.
Student-body diversity index 11.0/100
Simpson diversity index - at 11.0, Southwestern High School is less mixed than the Illinois school average of 38.9.
Programs
AP courses offered 2
District finance for Southwestern Cusd 9 reports $15,053 per pupil (NCES F-33) - open the district page for the full revenue mix.
How Southwestern High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Brighton North Primary School | Similar size | No free-lunch data | Higher S:T ratio |
| Southwestern Middle School | Smaller | No free-lunch data | Similar S:T ratio |
| Medora Intermediate School | Smaller | No free-lunch data | Similar S:T ratio |
| Shipman Elem School | Smaller | No free-lunch data | Higher S:T ratio |
Comparisons are relative to Southwestern High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 171
- Students per teacher
- 11.4:1
- Resource Index
- 42/100
- Enrollment
- 160
- Students per teacher
- 12.3:1
- Resource Index
- 47/100
- Enrollment
- 155
- Students per teacher
- 14.1:1
- Resource Index
- 48/100
Nationwide high 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 (~370 students)
Frequently asked questions about Southwestern High School
How many students attend Southwestern High School?
Southwestern High School has 370 students enrolled. It is a high school in Piasa, IL. CCD year-over-year: 372 (2022-23) → 376 (2023-24), nearly flat (+4).
What is the student-teacher ratio at Southwestern High School?
The student-teacher ratio at Southwestern High School is 11.9:1, which is 15% lower than the Illinois average of 14:1 and 24% 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 Southwestern High School?
The largest demographic group at Southwestern High School is White at 94.3% of enrollment, in Piasa, IL.
What is the Resource Investment Index for Southwestern High School?
Southwestern High School has a Resource Investment Index of 32/100 (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).
What other schools are in Southwestern Cusd 9?
Besides Southwestern High School, Southwestern Cusd 9 also operates Brighton North Primary School (293 students), Southwestern Middle School (171 students), and Medora Intermediate School (160 students). See the Southwestern Cusd 9 district page for the complete list.