Excellent
#65 of 2,842 schools in PA
Top 2% in state
Garnet Valley HS
High School · Garnet Valley SD
552 Smithbridge Rd, Glen Mills, PA 19342
Enrollment
1,500
Student-Teacher
12.9:1
Score
9.0
Grades
9th – 12th
Enrollment
1,500
Student-Teacher
12.9:1
Score
9.0
Grades
9th – 12th
Updated
2022-23
Updated 2022-23
How this school compares
In Glen Mills
#1 of 4
public schools
Pennsylvania high schools
#5 of 641
In district
#1 of 5
Garnet Valley SD
Academic performance
9.6 / 10
Exceptional
About Garnet Valley HS
Garnet Valley High School serves approximately 1,500 students in grades 9 through 12 in Glen Mills, Pennsylvania. The school earns a composite score of 9.0 out of 10, rated Exceptional, with an academic score of 9.6 — one of the highest in the state — and a growth score of 7.6. A student-teacher ratio of 12.9 to 1 keeps classrooms small relative to peers and gives students consistent access to direct instruction.
The rankings confirm what the scores suggest. Garnet Valley places 5th among 641 public high schools statewide and outperforms 98% of all public schools in Pennsylvania — a standing that holds across the full field of 2,842 schools. In Glen Mills, it ranks first among the four public schools serving the area.
For families evaluating public high schools in Pennsylvania, Garnet Valley's data profile is difficult to match. Academic performance sits near the top of the state, class sizes favor individual attention, and the growth score reflects a program that continues to build on its results. Schools at this score level are rare, and Garnet Valley's position in the top five among Pennsylvania high schools puts it in distinct company.
What's said publicly about Garnet Valley HS
Synthesized from public, attributable sources. Updated May 2026.
Sources (1)
Score Breakdown
Full Profile · 4/4 metricsView breakdown
View breakdown
View breakdown
View breakdown
Garnet Valley HS — Students at Garnet Valley HS score 86% proficient, which is above what's typical for similar communities (expected: 68%).
Equity & Diversity
Shown separately, not included in overall scoreFree/Reduced Lunch
15.9%
Students qualifying for federal meal assistance
Test Scores PA PSSA (2023-24)
Based on 5 test records from PA state assessments. About our data
Proficiency Trend
→ StableAverage proficiency (% at or above grade level) across Math & ELA over time.
* COVID-affected year — test participation was uneven nationwide. This data is weighted at 50% in the Growth score calculation.
Source: EdFacts (NCES) and state assessment data. Growth score: 7.6/10.
How Garnet Valley HS Compares
See how Garnet Valley HS performs across key quality dimensions compared to state benchmarks.
Funding & Resources
Performance Trends
Math proficiency has remained stable from 83% (2019) to 84% (2021).
Location
552 Smithbridge Rd, Glen Mills, PA 19342
Nearby Alternatives
Families considering Garnet Valley HS may also want to explore other high schools in the area. Brandywine High School (rated 8.6/10, 4.7 miles away, in nearby Wilmington), with a comparable rating. Additionally, Concord High School (rated 8.5/10, 2.8 miles away, in nearby Wilmington), with a comparable rating. For more schools in Glen Mills, see our Glen Mills schools guide .
Nearby Schools
20 within 4.7 mi| School | Distance | Rating |
|---|---|---|
| Garnet Valley MS Glen Mills | 0.6 mi | 8.1 |
| Garnet Valley El Sch Glen Mills | 0.6 mi | 8.1 |
| Concord El Sch Glen Mills | 0.9 mi | 8.0 |
| Bethel Springs El Sch Garnet Valley | 1.7 mi | 7.8 |
| ST THOMAS THE APOSTLE SCHOOL Glen Mills | 2.3 mi | 6.4 |
| Concord High School Wilmington | 2.8 mi | 8.5 |
| Lancashire Elementary School Wilmington | 3.0 mi | 6.5 |
| CONCORD CHRISTIAN ACADEMY Wilmington | 3.0 mi | 8.6 |
| CHILDREN'S HOUSE MONTESSORI Wilmington | 3.0 mi | — |
| Delaware County Technical High School - Aston Aston | 2.8 mi | — |
| Bush (Charles W.) Pre-School Wilmington | 3.4 mi | 5.5 |
| Hanby Elementary School Wilmington | 3.4 mi | 6.2 |
| Talley Middle School Wilmington | 3.4 mi | 6.2 |
| ST CORNELIUS SCHOOL Chadds Ford | 3.0 mi | — |
| THE MALVERN SCHOOL Glen Mills | 4.0 mi | — |
| Aston El Sch Aston | 3.2 mi | 5.0 |
| Forwood Elementary School Wilmington | 4.2 mi | 5.2 |
| ST EDMOND'S ACADEMY Wilmington | 4.4 mi | 7.1 |
| Hilltop El Sch Aston | 3.7 mi | 9.3 |
| Brandywine High School Wilmington | 4.7 mi | 8.6 |
Neighborhood Census ACS (2019-2023)
Census data for ZIP 19342 (ACS 2019-2023 5-Year Estimates) · Data sources
Median Income
$136,647
Median Home Value
$579,400
Median Rent
$2,298/mo
Population
20,654
College Educated
55.4%
Homeownership
72.4%
Avg Commute
27.7 min
Poverty Rate
2.1%
Median Age
46.7
Community Profile
The community surrounding Garnet Valley HS has a median household income of $136,647. It is a well-educated community where 55% of adults hold a bachelor's degree or higher. The median home value in the area is $579,400, with a median rent of $2,298/month. The local poverty rate of 2.1% is relatively low. The average commute for residents is 28 minutes. Source: U.S. Census ACS 2022 5-Year Estimates.
Similar Schools
Schools in the same state with comparable level, size, and ratings
| School | Rating |
|---|---|
| Lower Merion HS Ardmore, PA | 9.0 |
| Radnor SHS Radnor, PA | 8.9 |
| Fox Chapel Area HS Pittsburgh, PA | 8.8 |
| Pine-Richland HS Gibsonia, PA | 8.8 |
| Harriton SHS Rosemont, PA | 9.3 |
| Strath Haven HS Wallingford, PA | 8.7 |
Frequently Asked Questions
Common questions about Garnet Valley HS
What grades does Garnet Valley HS serve?
Garnet Valley HS serves students in grades 9th through 12th.
How many students attend Garnet Valley HS?
Garnet Valley HS has an enrollment of approximately 1,500 students.
What is the student-teacher ratio at Garnet Valley HS?
The student-teacher ratio at Garnet Valley HS is 12.9:1. A lower ratio generally means more individual attention per student. The national average is approximately 16:1 for public schools.
How does Garnet Valley HS rank in PA?
Garnet Valley HS is ranked #65 out of 2,842 schools in PA.
What is Garnet Valley HS's MySchoolScout rating?
Garnet Valley HS has a composite rating of 9.0 out of 10 on MySchoolScout. This score combines academic performance, student growth, and school environment into a single score. Equity data is shown separately for context.
What are the test scores at Garnet Valley HS?
Based on the most recent state assessment data, Garnet Valley HS has 80.1% math proficiency and 89.2% reading/ELA proficiency.
Is Garnet Valley HS a charter school?
No, Garnet Valley HS is not a charter school. It is a traditional public school operated by the local school district.
Is Garnet Valley HS a Title I school?
No, Garnet Valley HS is not currently a Title I school.
What does the Free & Reduced Lunch percentage mean for Garnet Valley HS?
15.9% of students at Garnet Valley HS qualify for free or reduced-price lunch. This is a commonly used indicator of economic need and provides important context when interpreting test scores.
Explore More Schools
Neighborhood Context
Powered by 
FBI UCR. County-level only.
Quick Facts NCES CCD (SY 2022-23)
- Grades
- 9th – 12th
- Enrollment
- 1,500
- Student-Teacher Ratio
- 12.9:1
- Teachers (FTE)
- 116
- Free/Reduced Lunch
- 15.9%
- Type
- regular
- Setting
- Large Suburb
- County
- Delaware County
- Phone
- (610) 579-7745
- Data Year
- 2023–2024
Resources & Links
District
Garnet Valley SD- District Enrollment
- 4,473
- Schools in District
- 5
- Per-Pupil Spending
- $22,767
- District Rank
- #1 of 5
Other Schools in This District
How We Rate Schools
Every school receives a composite score from 1 to 10 based on four pillars: Academic Performance (50%), Student Growth (20%), Equity (15%), and Learning Environment (15%). Scores are built from publicly available data including standardized test results, enrollment figures, and school climate indicators.
Read our full methodologyRelated reading
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