Clayton High School
Clayton High School serves 908 students in grades 9-12.
Clayton High School placed in the top 1% of all schools in Missouri for overall test scores (math proficiency is top 1%, and reading proficiency is top 5%) for the 2018-19 school year.
The percentage of students achieving proficiency in math is 78% (which is higher than the Missouri state average of 42%) for the 2018-19 school year. The percentage of students achieving proficiency in reading/language arts is 80% (which is higher than the Missouri state average of 49%) for the 2018-19 school year.
The student:teacher ratio of 11:1 is lower than the Missouri state level of 13:1.
Minority enrollment is 36% of the student body (majority Black and Asian), which is higher than the Missouri state average of 30% (majority Black and Hispanic).
- Grades: 9-12
- Students: 908 students
- Student:Teacher Ratio: 11:1
- Minority Enrollment: 36%
- Graduation Rate: ≥99% (Top 1% in MO)
- Overall Testing Rank: Top 1%
- Math Proficiency: 78% (Top 1%)
- Reading Proficiency: 80% (Top 5%)
- Source: National Center for Education Statistics (NCES), MO Dept. of Education
Clayton High School ranks among the top 20% of public schools in Missouri for:
Reading/Language Arts Proficiency
Clayton High School's student population of 908 students has stayed relatively flat over five school years.
The teacher population of 79 teachers has stayed relatively flat over five school years.
Total Classroom Teachers
Students by Grade
Clayton High School is ranked within the top 1% of all 2,091 schools in Missouri (based off of combined math and reading proficiency testing data) for the 2018-19 school year.
The diversity score of Clayton High School is 0.56, which is more than the diversity score at state average of 0.49. The school's diversity has stayed relatively flat over five school years.
Definition of Terms 2020-2021 School Year Data
State Level (MO)
Overall Testing Rank
#15 out of 2091 schools
Math Test Scores (% Proficient)
Reading/Language Arts Test Scores (% Proficient)
Student : Teacher Ratio
Two or more races
All Ethnic Groups
Eligible for Free Lunch
Eligible for Reduced Lunch
School Statewide Testing
School District Name
Source: 2020-2021 (latest school year available) National Center for Education Statistics (NCES), MO Dept. of Education
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.
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).
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