- Enrollment
- 1,308
- Students per teacher
- 17.4:1
- Resource Index
- 20/100
High school (grades 9-12) · Springfield, IL
Lanphier High School
Federal NCES profile for Lanphier High School, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 23/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 173708003829
👥 S:T ratio 40
🌟 Gifted program 30
📋 Attendance 0
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Lanphier High School earns 23/100 on the Resource Investment Index, with class sizes near the Illinois median. It is also more racially and ethnically mixed than most Illinois schools.
- #1 of 3
- high schools in Springfield · Resource Index
- 23
- Resource Index · Lower
- 14.9:1
- students per teacher
- 1,117
- students enrolled
Lanphier High School has class sizes near the Illinois median. Computed live against every Illinois school reporting to NCES.
By Resource Investment Index, Lanphier High School ranks #1 of 3 high schools in Springfield, IL.
School address
District: Springfield Sd 186 · Illinois
NCES ID 173708003829 Verify on NCES CCD record →
NCES CCD universe card
School universe 173708003829 · Springfield, IL High · MID · TRAD
1,117 enr · 14.9:1 · RII 23
Nearest enrollment peer: Springfield High School (1,308 students)
Resource Investment Index #1 of 3 high schools in Springfield. NCES Common Core of Data stamps for this campus. Read with this school → · District book → · Illinois schools → · Find another →
Lanphier High School in the enrollment neighbourhood
Fall enrollment among this campus and nearest district peers
- Springfield Hi
Springfield High School
1,308 students
- Springfield So
Springfield Southeast High Sch
1,229 students
- This school
Lanphier High School
1,117 students
- Benjamin Frank
Benjamin Franklin Middle School
709 students
- Early Learning
Early Learning Center
549 students
- Jefferson Midd 517
Jefferson Middle School
517 students
What this shows Lanphier High School reports 1,117 students on the CCD universe file.
How Lanphier High School compares
Lanphier High 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 | 14.9:1 | ▲ 6% | 14:1 | 15.7:1 |
| Enrollment | 1,117 | top 6% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
14.9:1
Leaner classes than 48% of US schools, a middle-of-the-pack class size.
1,117
Bigger than 93% of US schools by enrollment, a large campus nationally.
Equity indicators (what these measure)
Staffing depth
14.9:1
students per teacher
- 6% above state mean
Top 68% in Illinois - lower ratio than 32% of state schools
Close to the 15:1 benchmark most often cited for individualized attention.
Engagement
88.4%
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
$21,554
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
363
in-school suspensions + 215 out-of-school
Suspension rate: 32.5 per 100 students. Combined in-school and out-of-school rate: 51.7 per 100 students. Reported via the Civil Rights Data Collection. Includes 2 expulsions.
Student demographics
African American 45.9%
White 37.6%
Two or More 13.6%
Hispanic or Latino 2.3%
Asian 0.4%
American Indian / Alaska Native 0.1%
Largest group: African American at 45.9% of enrollment.
Student-body diversity index 62.9/100
Simpson diversity index - at 62.9, Lanphier High School is more mixed than the Illinois school average of 38.9.
Programs
AP courses offered 15
Funding & spending
District-wide per-pupil expenditure for Springfield Sd 186, which includes Lanphier High School.
$21,554
Per student
+18%
vs Illinois
Avg $18,196
+22%
vs U.S.
Avg $17,658
Revenue mix
Local 46.0%
State 35.9%
Federal 18.1%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2022-23 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Lanphier High School Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Springfield High School | Similar size | No free-lunch data | Higher S:T ratio |
| Springfield Southeast High Sch | Similar size | No free-lunch data | Similar S:T ratio |
| Benjamin Franklin Middle School | Smaller | No free-lunch data | Similar S:T ratio |
| Early Learning Center | Smaller | No free-lunch data | Higher S:T ratio |
| Jefferson Middle School | Smaller | No free-lunch data | Lower S:T ratio |
Comparisons are relative to Lanphier High School's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 1,229
- Students per teacher
- 15.2:1
- Resource Index
- 23/100
- Enrollment
- 709
- Students per teacher
- 13.6:1
- Resource Index
- 39/100
- Enrollment
- 549
- Students per teacher
- 17.2:1
- Resource Index
- 31/100
- Enrollment
- 517
- Students per teacher
- 12.9:1
- Resource Index
- 26/100
Similar high schools in Springfield
2 comparable high schools (grades 9-12) serving the same city.
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 (~1,117 students)
Similar student-teacher ratio (~14.9:1)
Frequently asked questions about Lanphier High School
How many students attend Lanphier High School?
Lanphier High School has 1,117 students enrolled. It is a high school in Springfield, IL.
What is the student-teacher ratio at Lanphier High School?
The student-teacher ratio at Lanphier High School is 14.9:1, which is 6% higher than the Illinois average of 14:1 and 5% lower than the national average of 15.7:1.
What is the racial and ethnic makeup of Lanphier High School?
The largest demographic group at Lanphier High School is African American at 45.9% of enrollment, in Springfield, 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 Lanphier High School?
Lanphier High School has a Resource Investment Index of 23/100 (lower 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 Lanphier High School rank among high schools in Springfield?
By Resource Investment Index, Lanphier High School ranks #1 of 3 high schools in Springfield, IL. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all high schools in Springfield on the city page.
What other schools are in Springfield Sd 186?
Besides Lanphier High School, Springfield Sd 186 also operates Springfield High School (1,308 students), Springfield Southeast High Sch (1,229 students), and Benjamin Franklin Middle School (709 students). See the Springfield Sd 186 district page for the complete list.
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, the data changelog, or report a data error. Data current as of August 2026.