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Alumni: what's one memory from Olathe South Sr High that still sticks with you?
Community prompt from u/allk12. Replies below.
Enrollment
1,778
High
DISTRICT 1,552 · STATE 410
SCHOOL COMMUNITY·OLATHE·NCES 201014001602
Olathe South Sr High
1640 E 151st St, Olathe, KS 66062 · (913) 780-7160 · Johnson County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,778 STUDENTS
B-
allk12 Grade
Scored higher than 49% of Kansas public high schools
- B+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- C-Beats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
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
15.1:1
117 FTE teachers
DISTRICT 14.8:1 · STATE 11.9:1
Free / Reduced Lunch
21%
382 students
DISTRICT 31% · STATE 51%
Community
6
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 | 394 | 22% |
| Grade 10 | 466 | 26% |
| Grade 11 | 417 | 23% |
| Grade 12 | 498 | 28% |
| Ungraded | 3 | 0% |
Student demographics
49%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 57% · 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
Test scores
KAP 2024-25 . % Meeting + ExceedingEnglish Language Arts
38.8%
KS avg 44.5%
Math
42.7%
KS avg 38.8%
What this means: On the KAP, Kansas's statewide test, about 39 of every 100 students at this school read and write at grade level and about 43 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 | 38.8% | 42.7% |
| 2023-24 | 30.4% | 27.4% |
% 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
34.1%
composite math + reading, all grades
Predicted
51.9%
based on KS schools with similar FRL share
Beats by
-17.9pp
below demographic expectation
What this means: About 34% of students here test proficient in math and reading, below the roughly 52% 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 Olathe South Sr High
Olathe South Sr High's state test result (34.1% proficient) is higher than 1 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Olathe South Sr High this school | 1,778 | 21.5% | 34.1% |
| Andover Central High School Andover | 886 | 22.1% | 36.5% |
| Olathe Northwest High School Olathe | 1,958 | 14.6% | 44.1% |
| Olathe West High School Olathe | 1,557 | 22.5% | 34.4% |
| Maize South High School Wichita | 1,107 | 25.9% | 32.5% |
| Lawrence Free State High Lawrence | 1,774 | 30.3% | 41.3% |
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 Olathe South Sr High ranks
Among high schools| Measure | This school | In Kansas | In Johnson County |
|---|---|---|---|
| State test proficiency ranked highest first | 34.1% | #84 of 262 | #16 of 19 |
| Math proficiency ranked highest first | 42.7% | #82 of 262 | #12 of 19 |
| Reading proficiency ranked highest first | 38.8% | #119 of 262 | #17 of 19 |
| Enrollment ranked largest first | 1,778 | #15 of 332 | #5 of 20 |
| Students per teacher ranked fewest first | 15.1:1 | #135 of 172 | #12 of 19 |
| Diversity index ranked most diverse first | 49.4% | #48 of 172 | #10 of 19 |
| Free and reduced lunch ranked highest share first | 21.5% | #245 of 263 | #10 of 19 |
| Enrollment change since 2017-18 ranked steepest decline first | -14.9% | #21 of 100 | #1 of 14 |
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
1,778
-161 (-8%) vs 2020
+52% since 1990-91, when it was 1,169
Student : Teacher
15.1:1
was 16.2:1
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 | 1,778 | 117.4 | 15.1:1 | 21% (382) |
| 2023-24 | 1,843 | 119.8 | 15.4:1 | 24% (439) |
| 2022-23 | 1,841 | 119.7 | 15.4:1 | 21% (380) |
| 2020-21 | 1,939 | 120 | 16.2:1 | 17% (324) |
| 2017-18 | 2,089 | 119.1 | 17.5:1 | 19% (392) |
| 2015-16 | 2,109 | N/A | N/A | 17% (356) |
| 2010-11 | 2,030 | 127 | 16.0:1 | 15% (305) |
| 2000-01 | 1,416 | 104 | 13.6:1 | 4% (60) |
| 1990-91 | 1,169 | 93 | 12.6:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Olathe South Sr High.
Since 2017-18: students down 15% (2,089 to 1,778); teachers down 1% (119.1 to 117.4).
About Olathe South Sr High
Olathe South Sr High serves students in Olathe, Kansas, as a high-enrollment high school. Classes run from 9 through 12, and the school has 1,778 students. The average for high schools in Kansas is about 410 students, so this school is 334% bigger than average.
Olathe runs Olathe South Sr High along with 51 other schools, enrolling 28,194 students in total.
Olathe South Sr High is 69% White by enrollment. Other reported shares: 15% Hispanic, 8% Black, 4% Asian, and 4% multiracial. That compares with about 79% White among all Johnson County residents. Pick two students at random and there is a 49% chance they belong to different racial or ethnic groups; that figure is the school's diversity index.
The school employs the equivalent of 117.4 full-time teachers, for a ratio of 15.1:1. That is higher than the 11.9:1 average for high schools in Kansas. The free or reduced-price lunch share, often used to gauge student poverty, is 21%.
Measured against Kansas public high schools, Olathe South Sr High receives a B-. The grade weighs proficiency most heavily, then how results compare with what the school's low-income share predicts, then the three-year change.
On allk12's BeatsExpectations measure, Olathe South Sr High is among the bottom 10% of schools in Kansas. Predicted: 51.9%. Actual: 34.1%.
According to the American Community Survey, in Johnson County, the median household income is $109,208, the share of adults with a bachelor's degree or higher is 58%, and roughly 3% of residents are in poverty. Olathe South Sr High is one of 168 public schools in the county.
Indian Trail Middle School is the public school closest to Olathe South Sr High, about 0.2 miles away. The count of other public schools within five miles is at least 8. On average proficiency, Olathe South Sr High is 8th of 9 nearby schools with test data.
In the federal locale system, Olathe South Sr High is coded Suburb: Large, for schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
2024-25 enrollment was 1,778, an 8% decrease from 1,939 in 2020-21. Its ratio of students to teachers was 16.2:1 in 2020-21, and 15.1:1 in 2024-25.
Families, students, and staff can use this page to discuss enrollment questions, class placement, and PTA news at Olathe South Sr High. Anyone with firsthand experience at this school can post or comment.
Johnson County at a glance
View full county profilePopulation
620,631
Census ACS
Median income
$109,208
Household, ACS
Bachelor's+
58%
Adults 25+
Poverty rate
3%
Below federal line
Schools in county
168
93,598 students
Quick facts
Related schools
Other schools in Olathe
- Olathe North Sr HighHigh · 2,011 students
- Olathe Northwest High SchoolHigh · 1,958 students
- Olathe East Sr HighHigh · 1,844 students
- Olathe West High SchoolHigh · 1,557 students
- Prairie Trail Middle SchoolMiddle · 709 students
- Frontier Trail Middle SchoolMiddle · 693 students
Other schools in Olathe
- Olathe North Sr HighHigh · 2,011 students
- Olathe Northwest High SchoolHigh · 1,958 students
- Olathe East Sr HighHigh · 1,844 students
- Olathe West High SchoolHigh · 1,557 students
- Prairie Trail Middle SchoolMiddle · 709 students
- Frontier Trail Middle SchoolMiddle · 693 students
Nearby schools
- Indian Trail Middle School0.2 mi · 582
- Heritage Elementary0.3 mi · 335
- Scarborough Elem0.4 mi · 307
- Havencroft Elem1.0 mi · 271
- Chisholm Trail Middle School1.1 mi · 569
- Brougham Elem1.2 mi · 298
Frequently asked questions
About Olathe South Sr HighWhat is the total enrollment at Olathe South Sr High?
Olathe South Sr High enrolls approximately 1,778 students in grades 09-12.
What grades does Olathe South Sr High serve?
Olathe South Sr High serves grades 09-12.
How many students per teacher at Olathe South Sr High?
Approximately 15.1:1 students per teacher at Olathe South Sr High.
How diverse is Olathe South Sr High?
Olathe South Sr High reports a student body of 69% White, 15% Hispanic, 8% Black, 4% Asian, 4% Two or more.
Who oversees Olathe South Sr High?
Olathe South Sr High is overseen by Olathe in Johnson County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.