Enrollment
296
Kansas · 2024-25 NCES data
High school (grades 9-12) · Colby, KS
Colby Senior High
Federal NCES profile for Colby Senior High, including enrollment, faculty, free-lunch eligibility, demographics, and resource indicators - Resource Investment Index 29/100.
2024-25 NCES dataHigh school (grades 9-12)NCES 200501000573
👥 S:T ratio 30
📚 AP courses 10
🌟 Gifted program 30
📋 Attendance 47
Scored 0–100 from federal NCES and CRDC indicators, resource allocation, not test scores. Full methodology →
The verdict
Colby Senior High earns 29/100 on the Resource Investment Index, with class sizes larger than 90% of Kansas schools.
- #3 of 3
- public schools in Colby · Resource Index
- 29
- Resource Index · Lower
- 17.4:1
- large classes for Kansas
- 24.3%
- free-lunch eligible
Colby Senior High has class sizes larger than 90% of Kansas schools. Computed live against every Kansas school reporting to NCES.
By Resource Investment Index, Colby Senior High ranks #3 of 3 public schools in Colby, KS.
School address
District: Colby Public Schools · Kansas
NCES ID 200501000573 Verify on NCES CCD record →
Teachers (FTE)
17.0
Federal CCD staff survey
Students per teacher
17.4:1
vs 13.8:1 Kansas avg
+26% vs state
Free-lunch eligible
24.3%
vs 42.7% Kansas avg
-43% vs state
Student-teacher ratio in context
How Colby Senior High compares with Kansas and U.S. medians
What stands out at Colby Senior High
Colby Senior High is a mid-sized high school in Colby, Kansas, enrolling 296 students.
Class loads run heavy: 17.4:1 is larger than about 90% of Kansas schools and 26% above the 13.8:1 state mean, so each teacher carries more students than is typical.
Economic need runs somewhat below the state's typical profile, with 24.3% of students eligible for free meals.
With 296 students, its enrollment sits close to the Kansas median campus size.
Its Resource Investment Index lands in the lower third of 1,346 scored Kansas schools.
Among 233 similarly sized, similarly resourced-need Kansas schools statewide, it ranks #223, in the lower tier once campus size and economic need are matched.
Its student body is predominantly White (81% of enrollment) (diversity index 32/100).
No Advanced Placement courses are reported for this campus in the federal data.
Attendance runs somewhat below the norm, with 21.3% of students chronically absent per the 2021-22 civil-rights collection.
Colby Public Schools also operates Colby Elem (369 students) and Colby Middle School (293 students) alongside Colby Senior High.
Sourced from NCES CCD, CRDC, and F-33 (federal records, not a quality verdict). How we source and compute this.
Source: National Center for Education Statistics Common Core of Data + CRDC + F-33 · 2024-25
How Colby Senior High compares
Colby Senior High on the metrics families compare, against Kansas and U.S. means.
| Metric | This school | vs Kansas | Kansas avg | U.S. avg |
|---|---|---|---|---|
| Students per teacher | 17.4:1 | ▲ 26% | 13.8:1 | 15.7:1 |
| Free-lunch eligible | 24.3% | ▼ 43% | 42.7% | 51.7% |
| Enrollment | 296 | top 49% | - | - |
Source: NCES Common Core of Data School-level CCD + state/national means from Public School Universe · 2024-25
17.4:1
Leaner classes than 28% of US schools, heavier class loads than most.
296
Bigger than 32% of US schools by enrollment, mid-sized for the country.
Equity indicators (what these measure)
Economic need
24.3%
free-lunch eligible
- 43% below the Kansas average of 42.7%
Below the 40% Title I threshold; federal aid targets individual qualifying students rather than schoolwide programs.
Staffing depth
17.4:1
students per teacher
- 26% above state mean
Top 90% in Kansas - lower ratio than 10% of state schools
Between 16:1 and 20:1, squarely in the typical U.S. public-school staffing range.
Engagement
21.3%
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
$12,771
per pupil, district-wide
- below Kansas avg of $15,487
Well below the U.S. average per-pupil spend, a notably leaner funding position that may affect programs, facilities, and staffing.
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.
Overview
- Common Core of Data (June 2026): enrollment, staffing, and the student-teacher ratio above.
- Civil Rights Data Collection: discipline counts and program access (AP, gifted, special education).
- F-33 School District Finance Survey: the district-wide per-pupil spending figures below.
Three separate federal collections, each on its own reporting cadence - which is why this school's numbers line up on a consistent basis against every other school and state on this site, rather than mixing figures pulled from different survey years.
Student demographics
White 81.1%
Hispanic or Latino 14.5%
Two or More 3.4%
Asian 0.7%
African American 0.3%
Largest group: White at 81.1% of enrollment.
Student-body diversity index 32.0/100
Simpson diversity index - at 32.0, Colby Senior High is less mixed than the Kansas school average of 39.4.
Programs
AP program Not offered
Funding & spending
District-wide per-pupil expenditure for Colby Public Schools, which includes Colby Senior High.
$12,771
Per student
-18%
vs Kansas
Avg $15,487
-23%
vs U.S.
Avg $16,593
Revenue mix
Local 35.6%
State 58.1%
Federal 6.3%
Source: NCES F-33 School District Finance Survey District-level finance · FY 2021-22 Per-pupil expenditure reflects the district-wide average. Individual school budgets are not reported at the federal level.
How Colby Senior High Compares to District-Mates
| School | Enrollment | Economic Profile | Student-Teacher Ratio |
|---|---|---|---|
| Colby Elem | Similar size | Higher economic need | Lower S:T ratio |
| Colby Middle School | Similar size | Similar economic need | Similar S:T ratio |
Comparisons are relative to Colby Senior High's own figures; each column derives from NCES Common Core of Data.
Other Schools in This District
- Enrollment
- 369
- Students per teacher
- 15.4:1
- Resource Index
- 44/100
- Enrollment
- 293
- Students per teacher
- 17.2:1
- Resource Index
- 37/100
Similar high schools statewide
Matched by enrollment size and by staffing ratio across all of Kansas, not just this city - a different peer set than the local comparisons above.
Similar enrollment (~296 students)
Similar student-teacher ratio (~17.4:1)
Next steps
Verify locally before acting on Colby Senior High's federal record.
- Compare Colby Senior High against another school. Compare schools
- Colby Public Schools's spending and staffing shape this school. District profile
- Confirm current enrollment and boundaries with the school. Choosing guide
Federal record (CCD 2024-25, CRDC 2021-22) - PlainSchools assigns no subjective rating; the composite quality score is a transparent, reproducible index computed from this cited federal data.
Frequently asked questions about Colby Senior High
How many students attend Colby Senior High?
Colby Senior High has 296 students enrolled. It is a high school in Colby, KS.
What is the student-teacher ratio at Colby Senior High?
The student-teacher ratio at Colby Senior High is 17.4:1, which is 26% higher than the Kansas average of 13.8:1 and 11% higher than the national average of 15.7:1.
What percentage of students receive free lunch at Colby Senior High?
24.3% of students at Colby Senior High are eligible for free lunch, compared to the Kansas average of 42.7%.
What is the racial and ethnic makeup of Colby Senior High?
The largest demographic group at Colby Senior High is White at 81.1% of enrollment, in Colby, KS.
What is the Resource Investment Index for Colby Senior High?
Colby Senior High has a Resource Investment Index of 29/100 (lower reported resources relative to schools nationally) based on 4 factors: student-teacher ratio, attendance rates. Not a test-score or academic measure (national median ~41/100, see methodology).
How does Colby Senior High rank among public schools in Colby?
By Resource Investment Index, Colby Senior High ranks #3 of 3 public schools in Colby, KS. This compares federal resource and staffing data among local peers; it is not a test-score or academic ranking. See all public schools in Colby on the city page.
Is Colby Senior High a good school?
Colby Senior High earns 29/100 on the Resource Investment Index, with class sizes larger than 90% of Kansas schools. This is a resource snapshot, not an academic rating; see the Resource Investment Index question above for what the number does and doesn't measure.
What other schools are in Colby Public Schools?
Besides Colby Senior High, Colby Public Schools also operates Colby Elem (369 students) and Colby Middle School (293 students). See the Colby Public Schools district page for the complete list.
Related tools
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, or report a data error. Data current as of June 2026.