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What's the most underrated thing about AFFTON HIGH that outsiders don't know?
Community prompt from u/allk12. Replies below.
Enrollment
761
High
DISTRICT 655 · STATE 501
SCHOOL COMMUNITY·AFFTON 101·NCES 290291000009
AFFTON HIGH
8309 MACKENZIE RD, ST LOUIS, MO 63123 · (314) 638-6330 · St. Louis County
GRADES 09–12HIGH21-SUBURBTITLE IREGULAR SCHOOL761 STUDENTS
Student : Teacher
14.8:1
51 FTE teachers
DISTRICT 14.3:1 · STATE 12.2:1
Free / Reduced Lunch
41%
314 students
DISTRICT 39% · STATE 54%
Community
1
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 | 186 | 24% |
| Grade 10 | 198 | 26% |
| Grade 11 | 198 | 26% |
| Grade 12 | 179 | 24% |
Student demographics
52%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 49% · STATE 52% · 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 AFFTON 101. Attendance zones can vary; confirm enrollment with the district.
BeatsExpectations
Demographically-adjusted score · methodologyTier
OUTPERFORMING
Top 10% of MO schools after controlling for student poverty
Actual proficiency
77.8%
composite math + reading, all grades
Predicted
50.5%
based on MO schools with similar FRL share
Beats by
+27.3pp
above demographic expectation
What this means: About 78% of students here test proficient in math and reading, well above the roughly 51% typical for Missouri schools with a similar share of low-income students. BeatsExpectations ranks schools against others at the same poverty level, not by raw scores, so a school can post high scores and still fall short of its prediction, or post lower scores and still beat it. This school clears its prediction by about 27 points, placing it in Missouri's top 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Where AFFTON HIGH ranks
Among high schools| Measure | This school | In Missouri | In St. Louis County |
|---|---|---|---|
| State test proficiency ranked highest first | 77.8% | #34 of 440 | #8 of 33 |
| Enrollment ranked largest first | 761 | #122 of 561 | #27 of 45 |
| Students per teacher ranked fewest first | 14.8:1 | #213 of 343 | #15 of 34 |
| Diversity index ranked most diverse first | 51.6% | #70 of 343 | #14 of 34 |
| Free and reduced lunch ranked highest share first | 41.3% | #262 of 455 | #17 of 36 |
| Enrollment change since 2017-18 ranked steepest decline first | -1.6% | #170 of 187 | #19 of 21 |
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.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
761
+18 (+2%) vs 2020
+13% since 1990-91, when it was 673
Student : Teacher
14.8:1
was 15.2:1
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 | 761 | 51.4 | 14.8:1 | 41% (314) |
| 2023-24 | 739 | 50.4 | 14.7:1 | 30% (221) |
| 2022-23 | 739 | 50.3 | 14.7:1 | 35% (262) |
| 2020-21 | 743 | 49 | 15.2:1 | 24% (176) |
| 2017-18 | 773 | 47.9 | 16.1:1 | 34% (263) |
| 2015-16 | 773 | 45 | 17.2:1 | 35% (267) |
| 2010-11 | 866 | 44 | 19.7:1 | 27% (233) |
| 2000-01 | 847 | 47 | 18.0:1 | 14% (120) |
| 1990-91 | 673 | 44 | 15.3:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for AFFTON HIGH.
About AFFTON HIGH
AFFTON HIGH is a large high school in Missouri, with an address in ST LOUIS. Students in grades 9 through 12 make up the school's enrollment of 761 students. By comparison, high schools in Missouri enroll about 501 students on average.
AFFTON HIGH reports to AFFTON 101, which has 4 schools and 2,619 students.
At AFFTON HIGH, 68% of students are White. It is also 11% Black, 9% multiracial, 9% Hispanic, and 4% Asian. The diversity index for AFFTON HIGH is 52%. For US public schools as a whole it is 70%.
Staffing at AFFTON HIGH comes to 51.4 full-time-equivalent teachers, or 14.8:1. High schools in Missouri average 12.2:1, 2.6 fewer students per teacher than here. AFFTON HIGH counts 41% of students as eligible for free or reduced-price lunch. The figure for public schools in St. Louis County is close, at 43%.
AFFTON HIGH scores 27.3 points above its predicted average proficiency rate across its state test results: 77.8% actual versus 50.5% predicted. That puts it in the top 10% of Missouri schools on BeatsExpectations.
Looking at the county, St. Louis County, the median household earns about $82,936 a year, the share of adults with a bachelor's degree or higher is 47%, and about 7% of people live in poverty. Counting AFFTON HIGH, St. Louis County has 275 public schools.
MESNIER PRIMARY SCH. sits about 0.7 miles from AFFTON HIGH. AFFTON HIGH has at least 8 other public schools within five miles. Among 8 nearby schools that report test results, AFFTON HIGH ranks 1st on proficiency.
The NCES locale for AFFTON HIGH is Suburb: Large, which covers schools in a suburban area outside a principal city, within an urbanized area with a population of 250,000 or more.
Enrollment went from 743 in 2020-21 to 761 in 2024-25, a change of 18 students.
The discussion board for AFFTON HIGH is open to topics like pickup and drop-off, after-school programs, and teacher feedback. Parents, students, alumni, and staff are welcome to post.
St. Louis County at a glance
View full county profilePopulation
995,569
Census ACS
Median income
$82,936
Household, ACS
Bachelor's+
47%
Adults 25+
Poverty rate
7%
Below federal line
Schools in county
275
134,601 students
Quick facts
Related schools
Other schools in AFFTON 101
- MESNIER PRIMARY SCH.Elementary · 741 students
- GOTSCH INTERMEDIATE SCH.Elementary · 562 students
- ROGERS MIDDLEMiddle · 555 students
Other schools in ST LOUIS
- RITENOUR SR. HIGHHigh · 2,041 students
- OAKVILLE SR. HIGHHigh · 1,847 students
- LADUE HORTON WATKINS HIGHHigh · 1,395 students
- MEHLVILLE HIGH SCHOOLHigh · 1,388 students
- HAZELWOOD EAST HIGHHigh · 1,310 students
- WEBSTER GROVES HIGHHigh · 1,253 students
Nearby schools
- MESNIER PRIMARY SCH.0.7 mi · 741
- GOTSCH INTERMEDIATE SCH.0.8 mi · 562
- ROGERS MIDDLE1.0 mi · 555
- BAYLESS SENIOR HIGH1.3 mi · 562
- BAYLESS ELEMENTARY1.4 mi · 858
- BAYLESS JUNIOR HIGH1.4 mi · 385
Frequently asked questions
About AFFTON HIGHHow many students attend AFFTON HIGH?
AFFTON HIGH enrolls approximately 761 students in grades 09-12.
Is AFFTON HIGH an elementary, middle, or high school?
AFFTON HIGH is a high school covering grades 09-12.
How many teachers does AFFTON HIGH have?
AFFTON HIGH employs 51 FTE teachers, for a student-to-teacher ratio of 14.8:1.
What is the student diversity at AFFTON HIGH?
Student demographics at AFFTON HIGH are roughly 68% White, 9% Hispanic, 11% Black, 4% Asian, 9% Two or more.
Who oversees AFFTON HIGH?
AFFTON HIGH is overseen by AFFTON 101 in St. Louis County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.