Serving 788 students in grades 9-12, Clayton High School ranks in the top 5% of all schools in Missouri for overall test scores (math proficiency is top 10%, and reading proficiency is top 10%).
The percentage of students achieving proficiency in math is 64% (which is higher than the Missouri state average of 40%). The percentage of students achieving proficiency in reading/language arts is 69% (which is higher than the Missouri state average of 43%).
The student-teacher ratio of 10:1 is lower than the Missouri state level of 12:1.
Minority enrollment is 41% of the student body (majority Black and Asian), which is higher than the Missouri state average of 33% (majority Black and Hispanic).
Quick Facts (26-27)
- Grades: 9-12
- Enrollment: 788 students
- Student-Teacher Ratio: 10:1
- Minority Enrollment: 41%
- Graduation Rate: ≥99% (Top 1% in MO)
- Overall Testing Rank: Top 5%
- Math Proficiency: 64% (Top 10%)
- Reading Proficiency: 69% (Top 5%)
- Science Proficiency: 54% (Top 20%)
- Attendance Zone: Clayton High's attendance zone encompasses the entire school district in Saint Louis, MO, covering approximately 3.3 square miles. Most students typically have a drive of 5-10 minutes to reach the school, with the furthest edge of the zone located about 2.4 miles away.
- Source: National Center for Education Statistics (NCES), MO Dept. of Education
Top Rankings
Clayton High School ranks among the top 20% of public schools in Missouri for:
Category
Attribute
Overall Rank
Math Proficiency
Reading/Language Arts Proficiency
Science Proficiency
Graduation Rate
School Overview
Clayton High School's student population of 788 students has declined by 13% over five school years.
The teacher population of 80 teachers has stayed relatively flat over five school years.
Grades Offered
Grades 9-12
(No virtual instruction)
(No virtual instruction)
Total Students
788 students
Showing 2016–2025. View full 39-year historical data
Total Classroom Teachers
80 teachers
Showing 2016–2025. View full 39-year historical data
Year Founded
1908
School Rankings
Clayton High School ranks within the top 5% of all 2,076 schools in Missouri (based off of combined math and reading proficiency testing data).
The diversity score of Clayton High School is 0.61, which is more than the diversity score at state average of 0.52. The school's diversity has stayed relatively flat over five school years.
Overall Testing Rank
#91 out of 2076 schools
(Top 5%)
(Top 5%)
Showing 2012–2023. View full 14-year historical data
Math Test Scores (% Proficient)
64%
40%
Showing 2013–2023. View full 14-year historical data
Reading/Language Arts Test Scores (% Proficient)
69%
43%
Showing 2011–2022. View full 13-year historical data
Science Test Scores (% Proficient)
54%
38%
Student-Teacher Ratio
10:1
12:1
Showing 2016–2025. View full 39-year historical data
Asian
13%
2%
Showing 2016–2025. View full 34-year historical data
Hispanic
4%
9%
Showing 2016–2025. View full 33-year historical data
Black
15%
15%
Showing 2016–2025. View full 34-year historical data
White
59%
67%
Showing 2016–2025. View full 34-year historical data
Two or more races
9%
6%
Showing 2016–2025. View full 13-year historical data
All Ethnic Groups
Showing 2016–2025. View full 34-year historical data
Graduation Rate
≥99%
89.3%
Showing 2014–2023. View full 13-year historical data
Chronically Absent Students
(22-23)18.7%
20.5%
Eligible for Free Lunch
7%
43%
Showing 2016–2025. View full 34-year historical data
Eligible for Reduced Lunch
1%
7%
Showing 2015–2025. View full 27-year historical data
School Statewide Testing
School District Name
Sports
Colors
Blue, Orange
School Mascot
Greyhounds
Source: National Center for Education Statistics (NCES), MO Dept. of Education
Frequently Asked Questions
What is Clayton High School's ranking?
Clayton High School is ranked #91 out of 2,076 schools, which ranks it among the top 5% of public schools in Missouri.
What schools are Clayton High School often compared to?
Clayton High Schoolis often viewed alongside schools like Ladue Horton Watkins High School by visitors of our site.
What percent of students have achieved state testing proficiency in math and reading?
64% of students have achieved math proficiency (compared to the 40% MO state average), while 69% of students have achieved reading proficiency (compared to the 43% MO state average).
What is the graduation rate of Clayton High School?
The graduation rate of Clayton High School is 99%, which is higher than the Missouri state average of 89.3%.
How many students attend Clayton High School?
788 students attend Clayton High School.
What is the racial composition of the student body?
59% of Clayton High School students are White, 15% of students are Black, 13% of students are Asian, 9% of students are Two or more races, and 4% of students are Hispanic.
What is the student-teacher ratio of Clayton High School?
Clayton High School has a student ration of 10:1, which is lower than the Missouri state average of 12:1.
What grades does Clayton High School offer ?
Clayton High School offers enrollment in grades 9-12 (No virtual instruction).
What school district is Clayton High School part of?
Clayton High School is part of Clayton School District.
School Reviews
5 10/10/2025
CHS is the best public school in the St. Louis area (that's not biased, I swear). There is a surfeit of extracurricular activities, and in addition to the traditional band, one can take piano or guitar. Every student is encouraged to participate in a sport, although it is not manditory. We score extremely high every year on standardized tests, and frequently win in the top ten at academic competitions. We have one of the best football teams in the county. (Go Greyhounds!) CHS also features a mix of ethnic groups (unlike Ladue).
5 10/10/2025
Clayton High School (Go Greyhounds!) provides a quality environment for students in the formative years of their lives (adolescent through young adult). Education programs include traditional subjects (English, Science, Social Studies, Math) and a distinct advantage for college preparation as the school also has a top flight foreign language program and advanced courses in many areas including foreign language, music, theater and industrial arts. Athletics is an area that is well supported by students and faculty as an opportunity for young minds to learn and participate as they learn the values of team work, honesty and dedication. The level of involvement in all areas (academic and extracurricular) is supported by the triad of successful education (students, teachers and parents/the home) allows graduating Seniors a distinct advantage over many other schools because of the level of involvement and continual success of their alumni (CEO's of major corporations, medical professionals, lawyers and military leaders). Even though the facilities in every department are top flight, the difference between an education at Clayton and other public schools is the teachers and staff; they care about the students. As an alumni of this school I had a distinct advantage over my peers in the military because of the curriculum and the way that the district prepared me both academically and as a person for the challenges I would face 30 years after graduation.
Review Clayton High School. Reviews should be a few sentences in length. Please include any comments on:
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