The bulletin board for America's public schools. Parents, teachers, students, and staff. One community per school.
SCHOOL COMMUNITY·CLAYTON·NCES 290972000275

CLAYTON HIGH

#1 MARK TWAIN CIRCLE, CLAYTON, MO 63105 · (314) 854-6600 · St. Louis County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL788 STUDENTS
Enrollment
788
High
DISTRICT 473 · STATE 501
Student : Teacher
9.9:1
80 FTE teachers
DISTRICT 10.1:1 · STATE 12.2:1
Free / Reduced Lunch
8%
63 students
DISTRICT 8% · 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
Grade 9
173
Grade 10
216
Grade 11
189
Grade 12
210
Student demographics
White
46259%
DISTRICT 61% · STATE 67%
Hispanic
344%
DISTRICT 4% · STATE 9%
Black
11815%
DISTRICT 13% · STATE 15%
Asian
10013%
DISTRICT 12% · STATE 2%
Two+
739%
DISTRICT 9% · STATE 6%
Native American
10%
DISTRICT 0% · STATE 0%
Student head counts by race/ethnicity from federal NCES enrollment data. Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Male
40451%
Female
38449%

Discussions

+ POST

BeatsExpectations

Demographically-adjusted score · methodology
Tier
OUTPERFORMING
Top 10% of MO schools after controlling for student poverty
Actual proficiency
73.6%
composite math + reading, all grades
Predicted
51.1%
based on MO schools with similar FRL share
Beats by
+22.5pp
above demographic expectation
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →

7-year change

SY 2017-18 vs SY 2024-25
Enrollment
788
-89 (-10%) vs 2017
Student : Teacher
9.9:1
was 11.3:1
% White
59%
was 60%
% Hispanic
4%
was 4%
% Black
15%
was 20%
% Asian
13%
was 13%
Source: NCES Common Core of Data

About CLAYTON HIGH

CLAYTON HIGH is a high school of well-populated scale in CLAYTON, Missouri, one of the schools within CLAYTON, works with 788 students in grades 9 through 12. Enrollment runs roughly 57% larger than the state mean of about 501.

CLAYTON comprises 5 schools with combined enrollment of 2,367 students; CLAYTON HIGH is among them.

For racial and ethnic makeup, CLAYTON HIGH shows that 59% of the student body identifies as White. Beyond that, the school lists 15% Black, 13% Asian, 9% multiracial, 4% Hispanic. That composition is broadly in line with St. Louis County as a whole.

On the income-and-resources front, CLAYTON HIGH lists 80 full-time-equivalent teachers, putting the student-to-teacher ratio at about 9.9:1. The state averages around 12.2:1, so this campus is tighter than the state norm typical. About 8% of enrolled students meet the income threshold for free or reduced-price lunch, which schools and policymakers use as a rough income-mix signal. That share is noticeably below St. Louis County's rate of about 43%.

On a residual basis (actual vs predicted given the student mix), CLAYTON HIGH sits in the top 10% of Missouri schools after the BeatsExpectations adjustment. Predicted proficiency for the school's FRL share is roughly 51.1%; actual is 73.6%, +22.5 points clear of the demographic baseline.

In the surrounding community, ACS estimates for St. Louis County put median household earnings sit near $82,936, 47% of adults hold a bachelor's degree or higher, and roughly 7% of residents live below the federal poverty line. In all, St. Louis County runs 275 public schools (combined enrollment of about 134,601 students), of which CLAYTON HIGH is one.

The closest other public school is JUVENILE DETENTION CTR., roughly 0.4 miles away. Counting just inside five miles, 8 other public schools cluster around CLAYTON HIGH. Ranking that nearby cluster on reported proficiency puts CLAYTON HIGH at 3rd of 8; the average score across the group is 64.3%.

The school occupies a bedroom-community site.

Trend over the last 7 years. Looking back 7 years, enrollment at CLAYTON HIGH has edged down 10%, going from 877 students in 2018 to 788 in 2025. Over the same period, the Black share shrank from 20% to 15%. The student-to-teacher ratio fell from 11.3:1 in 2018 to 9.9:1 today.

In the discussion threads here, members of the CLAYTON HIGH community share and discuss classroom updates, athletics, and weather closures. Members of the school community can share what they know.

St. Louis County at a glance

View full county profile
Population
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

School name
CLAYTON HIGH
District
CLAYTON
Address
#1 MARK TWAIN CIRCLE, CLAYTON, MO 63105
Phone
(314) 854-6600
County
St. Louis County
Level
High
Grade range
09–12
Total enrollment
788
Teachers (FTE)
80
Student–teacher ratio
9.9:1
Free/Reduced lunch
63 (8%)
Locale
21-Suburb: Large
NCES ID
290972000275
Charter school
No
Virtual school
No

Related schools

Other schools in CLAYTON
Other schools in CLAYTON
Nearby schools

Frequently asked questions

About CLAYTON HIGH
How many students attend CLAYTON HIGH?
CLAYTON HIGH enrolls approximately 788 students in grades 09-12.
What grades does CLAYTON HIGH serve?
CLAYTON HIGH serves grades 09-12.
What is the student-teacher ratio at CLAYTON HIGH?
The student-to-teacher ratio at CLAYTON HIGH is approximately 9.9:1 (80 FTE teachers).
What is the racial breakdown of students at CLAYTON HIGH?
At CLAYTON HIGH, the student body is approximately 59% White, 4% Hispanic, 15% Black, 13% Asian, 9% Two or more.
Is CLAYTON HIGH public or private?
CLAYTON HIGH is a public K-12 school, overseen by CLAYTON.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.
+ Post