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Excellent

#31 of 2,221 schools in MO

Top 1% in state

Clayton High

High School · Clayton · Clayton, MO

A high school in Clayton, MO where students score 21 points above what's typical for similar communities.

#1 MARK TWAIN CIRCLE, Clayton, MO 63105

  • Math 79% vs MO 48% (2025)
  • Reading 83% vs MO 57% (2025)
  • 99%+ 4-year graduation

Academics

Full Profile · 4/4 metrics
Student Progress9.9Excellent25%
Year-over-year improvement in student test scores.
View breakdown
Years of Data16
Annual Change+13.6 pts/yr
Data Period2009–2025
TrendImproving
Academics9.8Excellent25%
Student proficiency on state tests, adjusted for community poverty levels.
View breakdown
Math Proficiency78.9% (2025 MAP)
Reading/ELA Proficiency83% (2025 MAP)
Math vs. State Avg+30.5 pts
Reading vs. State Avg+25.6 pts
Overall Proficiency81% (2025 MAP, Math+ELA)
Expected (poverty-adj.)60% (model expectation from 2025 MAP)
vs. Expected+20.9 pts
Adjusted Percentile97th
College Readiness7.4Very Good30%
Graduation rates, AP course participation, and IB availability.
View breakdown
4-Year Graduation Rate99%+
AP Participation36.1%
IB ProgramNo
Resources & Environment9.9Excellent20%
Student-teacher ratio, district spending per student, and attendance.
View breakdown
Student-Teacher Ratio11:1
District spending per student$23,526
Chronic Absenteeism17.4%

Students at Clayton High score 81% proficient, which is above what's typical for similar communities (expected: 60%).

How we calculate scores →

2025 MAP proficiency

Most recent published year. School vs. MO average.

Math Proficiency79%(2025 MAP)
School
State
48%(2025 MAP)
ELA Proficiency83%(2025 MAP)
School
State
57%(2025 MAP)

Trend

→ Steady

Proficiency has held near 81% across the 17-year record (2009–2025).

Show all 16 years
2009
Math
67%
ELA
90%
2010
Math
62%
ELA
87%
2011
Math
45%
ELA
89%
2012
Math
72%
ELA
86%
2013
Math
76%
ELA
88%
2014
Math
83%
ELA
86%
2015
Math
88%
ELA
90%
2016
Math
75%
2017
Math
78%
ELA
80%
2018
Math
78%
ELA
80%
2019
Math
78%
ELA
80%
2020*
Math
82%
ELA
72%
2021*
Math
82%
ELA
72%
2022
Math
70%
ELA
69%
2024
Math
65%
ELA
70%
2025
Math
79%
ELA
83%

Multi-year averages used by the rating model: math 74% (multi-year average, 2009-2025) · reading/ELA 81% (multi-year average, 2009-2025)

* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.

Based on 31 test records from MO state assessments and EdFacts (NCES).

Equity & diversity

Shown separately, not included in the overall score

Free/reduced lunch

7.6%

Students qualifying for federal meal assistance

How we rate schools

A clear 1–10 score built from public data — growth, academics, and learning environment. No hidden criteria, no pay-to-play.

See how we rate

The neighborhood

Where Clayton High sits, and what the surrounding area looks like.

Nearby same-level schools are colored by their score. Pins are locations, not attendance boundaries. Open the St. Louis map →

Getting around & local context

  • Walk 72Very Walkable
  • Bike 66Bikeable
  • City Safety: Elevated897/100K

Powered byWalk Score

FBI Uniform Crime Reporting · 2024 · city context (Clayton), not school-level safety or attendance eligibility. Source details

Source period: 2024. Freshness not available.

Area profileU.S. Census ACS 5-year estimates (ACS 2019–2023 5-year estimates)

Median income

$119,446

Median home value

$735,500

Median rent

$1,520/mo

College educated

84.6%

Homeownership

56.4%

Poverty rate

9.4%

ACS 2019–2023 5-year estimates for the ZCTA associated with school ZIP 63105; this is area context, not an attendance boundary.

Programs & students

Programs & Offerings

AP/IB Programs4AP courses offered
36.1% participation·State avg: 2.3 AP courses·CRDC via Urban Institute · SY 2021–22
Athletics20sports offered
9 boys'·11 girls'·39 teams (incl. JV)·CRDC via Urban Institute · SY 2021–22
Advanced STEM Courses5of 5 advanced subjects offered
Algebra II, Advanced Math, Calculus, Chemistry, Physics·CRDC via Urban Institute · SY 2021–22

Compare nearby

Nearby same-level schools

4 from a 5-mile search

SchoolScoreGradesDistanceEnrollmentCompare
Juvenile Detention Ctr.Enrollment path unverified5.56–120.4 mi38Compare →
Esther Miller Bais YaakovPrivate · tuitionNot rated9–110.9 mi24Compare →
University City Sr. HighEnrollment path unverified6.89–121.4 mi811Compare →
H F Epstein Hebrew AcademyPrivate · tuition7.0privateK–121.5 mi74Compare →

Distance is proximity only; it is not attendance eligibility.

Enrollment path unverified: Potential public school; its attendance or application path has not been classified.

Private · tuition: Potential private option; tuition and admission requirements have not been verified.

Public and private scores come from different models and are shown side by side, not blended into one ranking.

Clayton

Schools in district
6
Rank in district
#1 of 5
District spending per student
$23,526NCES F-33 · FY 2023 · This annual source is three years behind the current year.
District child poverty rate
3.6%Census SAIPE · 2024

Clayton High is listed in CLAYTON; a district label does not verify attendance for an address.

About Clayton High

Clayton High is a public high school in Clayton, MO, part of Clayton, serving approximately 844 students in grades 9th-12th with a 11:1 student-teacher ratio. It holds a MySchoolScout rating of 9.1 out of 10 and ranks #31 of 2,221 schools in MO. State assessment records show 74% math proficiency (multi-year average, 2009-2025) and 81% reading/ELA proficiency (multi-year average, 2009-2025).

Frequently asked questions

Common questions about Clayton High

What grades does Clayton High serve?

Clayton High serves students in grades 9th through 12th.

How many students attend Clayton High?

Clayton High has an enrollment of approximately 844 students.

What is the student-teacher ratio at Clayton High?

The student-teacher ratio at Clayton High is 11:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.

How does Clayton High rank in MO?

Clayton High ranks #31 of 2,221 schools in MO.

What is Clayton High's MySchoolScout rating?

Clayton High has a current MySchoolScout rating of 9.1 out of 10. This score combines the level-appropriate components shown in the rating breakdown; equity data is shown separately for context.

What are the test scores at Clayton High?

Based on loaded state assessment records, Clayton High has 74% math proficiency (multi-year average, 2009-2025) and 81% reading/ELA proficiency (multi-year average, 2009-2025).

Is Clayton High a charter school?

No, Clayton High is not a charter school. It is a traditional public school operated by the local school district.

Is Clayton High a Title I school?

No, Clayton High is not currently a Title I school.

What does the Free & Reduced Lunch percentage mean for Clayton High?

7.6% of students at Clayton High qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.

School factsNCES Common Core of Data (CCD) (SY 2023–24)

Grades
9th – 12th
Enrollment
844
Student-Teacher Ratio
11:1
Teachers (FTE)
77
Type
regular
Setting
Large Suburb
County
St. Louis County
Chronic Absenteeism (SY 2022-23)
17.4%
4-Year Graduation
99%+
Area population (ZIP 63105)
18,860
Area average commute
17.2 min
Area median age
30.3
About this school's data

Every number on this page comes from a published source with a stated period. Where a source is partial, aging, or describes a surrounding area rather than the school, that limitation is named below.

School directory (enrollment, grades, staff, contact)
NCES Common Core of Data (CCD) · SY 2023–24 · Medium confidence
  • Source period: SY 2023–24. A newer release may be available.
MySchoolScout rating and rank
MySchoolScout ranking model · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Derived as a weighted blend of the component scores shown in Academics from state assessment, EdFacts growth, and NCES resource records.
Math proficiency
State department of education · 2025 MAP · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Derived from source records rather than read directly from one field.
Reading/ELA proficiency
State department of education · 2025 MAP · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Derived from source records rather than read directly from one field.
Student progress (growth)
State assessments · Mixed source periods · Low confidence
  • Vintage not available. Do not use this measure alone.
  • Available for part of the eligible units; results may not represent the full area.
  • Derived as the fitted year-over-year slope of proficiency from multi-year assessment records.
Neighborhood (income, housing, education)
U.S. Census ACS 5-year estimates · ACS 2019–2023 5-year estimates · Low confidence
  • Older source: ACS 2019–2023 5-year estimates. Use as historical context.
  • Reported for the ZCTA for ZIP 63105; this does not measure the attendance area.
Programs (AP/IB, athletics, gifted)
CRDC via Urban Institute · SY 2021–22 · Medium confidence
  • Available for part of the eligible units; results may not represent the full area.
  • Source period: SY 2021–22. A newer release may be available.

Evidence periods: Rating mixed/unknown input periods; assessments multi-year average, 2009-2025; directory SY 2023–24

About our data · How we calculate scores

Related reading

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