Enrollment
296
High
DISTRICT 319 · STATE 410
SCHOOL COMMUNITY·COLBY PUBLIC SCHOOLS·NCES 200501000573
Colby Senior High
1890 S Franklin Ave, Colby, KS 67701 · (785) 460-5300 · Thomas County
GRADES 09–12HIGH41-RURALREGULAR SCHOOL296 STUDENTS
C-
allk12 Grade
Scored higher than 16% of Kansas public high schools
- CTest scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- FBeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Kansas public high schools
Student : Teacher
13.6:1
22 FTE teachers
DISTRICT 14.2:1 · STATE 11.9:1
Free / Reduced Lunch
30%
88 students
DISTRICT 35% · STATE 51%
Community
0
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 69 | 23% |
| Grade 10 | 78 | 26% |
| Grade 11 | 67 | 23% |
| Grade 12 | 82 | 28% |
Student demographics
32%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 36% · STATE 58% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
School pathway
Feeds from
Based on grade levels within Colby Public Schools. Attendance zones can vary; confirm enrollment with the district.
Test scores
KAP 2024-25 . % Meeting + ExceedingEnglish Language Arts
50.7%
KS avg 44.5%
Math
32.0%
KS avg 38.8%
What this means: On the KAP, Kansas's statewide test, about 51 of every 100 students at this school read and write at grade level and about 32 of 100 do math at grade level. Across all Kansas schools, those numbers are about 45 and 39.
KAP results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 50.7% | 32.0% |
| 2023-24 | 24.2% | 19.0% |
% Meeting + Exceeding, all students and all tested grades. Kansas set new KAP cut scores in spring 2025, so results from 2023-24 and earlier are not comparable with later years.
Source: KAP. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
UNDERPERFORMING
Bottom 10% of KS schools after controlling for student poverty
Actual proficiency
24.7%
composite math + reading, all grades
Predicted
48.0%
based on KS schools with similar FRL share
Beats by
-23.3pp
below demographic expectation
What this means: About 25% of students here test proficient in math and reading, below the roughly 48% typical for Kansas schools with a similar share of low-income students. BeatsExpectations compares each school with others at the same poverty level, not by raw scores, so a school lands here when its results trail those comparable schools, which is not the same as having low scores. A higher-scoring school can still fall in this tier if similar schools score higher still.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Colby Senior High
Colby Senior High's state test result (24.7% proficient) is higher than 1 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Colby Senior High this school | 296 | 29.7% | 24.7% |
| Perry Lecompton High Perry | 268 | 29.9% | 24.1% |
| Rossville Jr.-Sr. High School Rossville | 253 | 29.6% | 31.6% |
| Clearwater High Clearwater | 361 | 31.0% | 30.6% |
| Spearville Jr/Sr High Spearville | 177 | 27.7% | 46.8% |
| Southeast Saline High Gypsum | 323 | 30.0% | 43.0% |
Matched among Kansas high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Colby Senior High ranks
Among high schools| Measure | This school | In Kansas |
|---|---|---|
| State test proficiency ranked highest first | 24.7% | #178 of 262 |
| Math proficiency ranked highest first | 32.0% | #151 of 262 |
| Reading proficiency ranked highest first | 50.7% | #44 of 262 |
| Enrollment ranked largest first | 296 | #126 of 332 |
| Students per teacher ranked fewest first | 13.6:1 | #94 of 172 |
| Diversity index ranked most diverse first | 32.0% | #93 of 172 |
| Free and reduced lunch ranked highest share first | 29.7% | #217 of 263 |
| Enrollment change since 2017-18 ranked fastest growth first | +1.0% | #70 of 75 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
296
+44 (+17%) vs 2020
-12% since 1990-91, when it was 335
Student : Teacher
13.6:1
was 14.8:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 296 | 21.8 | 13.6:1 | 30% (88) |
| 2023-24 | 272 | 17.2 | 15.8:1 | 29% (80) |
| 2022-23 | 284 | 17 | 16.7:1 | 30% (85) |
| 2020-21 | 252 | 17 | 14.8:1 | 27% (67) |
| 2017-18 | 293 | 15.5 | 18.9:1 | 28% (81) |
| 2015-16 | 297 | 19 | 15.6:1 | 31% (91) |
| 2010-11 | 368 | 19 | 19.4:1 | 37% (137) |
| 2000-01 | 396 | 31 | 12.8:1 | 25% (99) |
| 1990-91 | 335 | 24 | 14.0:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Colby Senior High.
Since 2017-18: students up 1% (293 to 296); teachers up 40% (15.5 to 21.8).
About Colby Senior High
Colby Senior High is a small high school in Colby, Kansas. The student body numbers 296 students, from grades 9 through 12. An average school in this group (high schools in Kansas) has about 410 students.
Besides Colby Senior High, Colby Public Schools runs 2 other schools. The district enrolls 958 students.
Most students at Colby Senior High are White: 81% of enrollment. Other students are 15% Hispanic and 3% multiracial. That is lower than the 90% White share among all Thomas County residents. By the diversity index, Colby Senior High comes in at 32%.
Federal records show a student-to-teacher ratio of 13.6:1 at Colby Senior High, with 21.8 full-time-equivalent teachers. Among high schools in Kansas, the typical ratio is 11.9:1. The count of students eligible for free or reduced-price lunch equals 30% of enrollment.
allk12 grades Colby Senior High a C-. The grade compares the school only with Kansas public high schools, because each state gives its own test.
After accounting for student poverty, Colby Senior High is in the bottom 10% of Kansas schools. Its average proficiency rate on state tests of 24.7% is 23.3 points below the 48.0% predicted for its lunch-eligibility share.
County data help place the school in context: in Thomas County, median household income is about $71,325, about 35% of adults have at least a bachelor's degree, and the poverty rate is about 4%. Colby Senior High is among the 7 public schools in Thomas County.
Colby Elem is located about 1.6 miles from Colby Senior High. Within five miles are 2 other public schools. Of 8 schools in the immediate area with test results, Colby Senior High ranks 7th on average proficiency.
On the NCES locale scale, the school is Rural: Fringe.
Enrollment was 252 in 2020-21 and 296 in 2024-25, a rise of 44 students. The student-to-teacher ratio went down from 14.8:1 to 13.6:1.
If you have questions about science fairs, picture day, and bus routes at Colby Senior High, you can post them here. Anyone with firsthand experience at this school can post or comment.
Thomas County at a glance
View full county profilePopulation
7,885
Census ACS
Median income
$71,325
Household, ACS
Bachelor's+
35%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
7
1,169 students
Quick facts
Related schools
Other schools in Colby Public Schools
- Colby ElemElementary · 369 students
- Colby Middle SchoolMiddle · 293 students
Other schools in Colby
- Colby ElemElementary · 369 students
- Colby Middle SchoolMiddle · 293 students
Nearby schools
- Colby Elem1.6 mi · 369
- Colby Middle School1.7 mi · 293
- Golden Plains High17.5 mi · 55
- Golden Plains Middle17.5 mi · 32
- Brewster High17.5 mi · 34
- Brewster Elem17.5 mi · 90
Frequently asked questions
About Colby Senior HighHow many students attend Colby Senior High?
Colby Senior High enrolls approximately 296 students in grades 09-12.
What age range does Colby Senior High serve?
Colby Senior High serves students from grade 09 through grade 12.
How many students per teacher at Colby Senior High?
Approximately 13.6:1 students per teacher at Colby Senior High.
How diverse is Colby Senior High?
Colby Senior High reports a student body of 81% White, 15% Hispanic, 0% Black, 1% Asian, 3% Two or more.
What district is Colby Senior High in?
Colby Senior High is part of Colby Public Schools.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.