For the 2026 school year, there are 22 public high schools serving 25,039 students in Delaware County, PA. The top-ranked public high schools in Delaware County, PA are Harriton Sr. High School, Radnor Sr. High School and Springfield High School. Overall testing rank is based on a school's combined math and reading proficiency test score ranking.
Delaware County, PA public high schools have an average math proficiency score of 38% (versus the Pennsylvania public high school average of 30%), and reading proficiency score of 67% (versus the 58% statewide average). High schools in Delaware County have an average ranking of 9/10, which is in the top 20% of Pennsylvania public high schools.
Delaware County, PA public high school have a Graduation Rate of 90%, which is more than the Pennsylvania average of 88%.
The school with highest graduation rate is Garnet Valley High School, with 98% graduation rate. Read more about public school graduation rate statistics in Pennsylvania or national school graduation rate statistics.
Minority enrollment is 51% of the student body (majority Black), which is more than the Pennsylvania public high school average of 40% (majority Hispanic and Black).
Best Public High Schools in Delaware County (2026)
School
(Math and Reading Proficiency)
(Math and Reading Proficiency)
Location
Quick Facts
Rank: #11.
Harriton Sr. High School
(Math: 78% | Reading: 91%)
Rank:
Rank:
10/
Top 5%10
600 N Ithan Ave
Bryn Mawr, PA 19010
(610) 658-3950
Bryn Mawr, PA 19010
(610) 658-3950
Gr: 9-12 | 1,239 student Student-teacher ratio: 11:1 Minority enrollment: 35%
Rank: #22.
Radnor Sr. High School
(Math: 72% | Reading: 95%)
Rank:
Rank:
10/
Top 5%10
130 King Of Prussia Rd
Wayne, PA 19087
(610) 293-0855
Wayne, PA 19087
(610) 293-0855
Gr: 9-12 | 1,146 student Student-teacher ratio: 12:1 Minority enrollment: 31%
Rank: #33.
Springfield High School
(Math: 76% | Reading: 82%)
Rank:
Rank:
10/
Top 5%10
200 S Rolling Road
Springfield, PA 19064
(610) 938-6100
Springfield, PA 19064
(610) 938-6100
Gr: 9-12 | 1,434 student Student-teacher ratio: 17:1 Minority enrollment: 24%
Rank: #44.
Strath Haven High School
(Math: 59% | Reading: 87%)
Rank:
Rank:
10/
Top 10%10
205 S Providence Rd
Wallingford, PA 19086
(610) 892-3470
Wallingford, PA 19086
(610) 892-3470
Gr: 9-12 | 1,175 student Student-teacher ratio: 13:1 Minority enrollment: 29%
Rank: #55.
Haverford Sr. High School
(Math: 53% | Reading: 78%)
Rank:
Rank:
9/
Top 20%10
200 Mill Rd
Havertown, PA 19083
(610) 853-5900
Havertown, PA 19083
(610) 853-5900
Gr: 9-12 | 1,994 student Student-teacher ratio: 16:1 Minority enrollment: 21%
Rank: #66.
Garnet Valley High School
(Math: 43% | Reading: 91%)
Rank:
Rank:
9/
Top 20%10
552 Smithbridge Rd
Glen Mills, PA 19342
(610) 579-7745
Glen Mills, PA 19342
(610) 579-7745
Gr: 9-12 | 1,485 student Student-teacher ratio: 13:1 Minority enrollment: 31%
Rank: #77.
Penncrest High School
(Math: 55-59% | Reading: 65-69%)
Rank:
Rank:
8/
Top 30%10
134 Barren Rd
Media, PA 19063
(610) 627-6201
Media, PA 19063
(610) 627-6201
Gr: 9-12 | 1,255 student Student-teacher ratio: 13:1 Minority enrollment: 25%
Rank: #88.
Marple Newtown Sr. High School
(Math: 40-44% | Reading: 75-79%)
Rank:
Rank:
8/
Top 30%10
120 Media Line Rd
Newtown Square, PA 19073
(610) 359-4218
Newtown Square, PA 19073
(610) 359-4218
Gr: 9-12 | 1,266 student Student-teacher ratio: 15:1 Minority enrollment: 19%
Rank: #99.
Ridley High School
(Math: 47% | Reading: 65%)
Rank:
Rank:
7/
Top 50%10
901 Morton Avenue
Folsom, PA 19033
(610) 237-8034
Folsom, PA 19033
(610) 237-8034
Gr: 9-12 | 1,825 student Student-teacher ratio: 14:1 Minority enrollment: 34%
Rank: #1010.
Chichester Sr. High School
(Math: 37% | Reading: 60-64%)
Rank:
Rank:
6/
Top 50%10
3333 Chichester Ave
Marcus Hook, PA 19061
(610) 485-6881
Marcus Hook, PA 19061
(610) 485-6881
Gr: 9-12 | 981 students Student-teacher ratio: 13:1 Minority enrollment: 52%
Rank: #1111.
Sun Valley High School
(Math: 39% | Reading: 60%)
Rank:
Rank:
6/
Top 50%10
2881 Pancoast Ave
Aston, PA 19014
(610) 497-6300
Aston, PA 19014
(610) 497-6300
Gr: 9-12 | 1,042 student Student-teacher ratio: 13:1 Minority enrollment: 22%
Rank: #1212.
Delaware County Technical High School - Aston
Vocational School
(Math: <50% | Reading: <50% )
Rank:
Rank:
4/
Bottom 50%10
100 Crozerville Road
Aston, PA 19014
(610) 459-3050
Aston, PA 19014
(610) 459-3050
Gr: 9-12 | 80 students Student-teacher ratio: 4:1 Minority enrollment: 66%
Rank: #1313.
Interboro Sr. High School
(Math: ≤20% | Reading: <50%)
Rank:
Rank:
3/
Bottom 50%10
16th & Amosland Road
Prospect Park, PA 19076
(610) 237-6410
Prospect Park, PA 19076
(610) 237-6410
Gr: 9-12 | 1,079 student Student-teacher ratio: 12:1 Minority enrollment: 35%
Rank: #1414.
Upper Darby Sr. High School
(Math: 10% | Reading: 50%)
Rank:
Rank:
2/
Bottom 50%10
601 North Lansdowne Avenue
Drexel Hill, PA 19026
(610) 622-7000
Drexel Hill, PA 19026
(610) 622-7000
Gr: 9-12 | 4,187 students Student-teacher ratio: 17:1 Minority enrollment: 85%
Rank: #1515.
Academy Park High School
(Math: 5% | Reading: <50%)
Rank:
Rank:
2/
Bottom 50%10
300 Calcon Hook Rd
Sharon Hill, PA 19079
(610) 522-4330
Sharon Hill, PA 19079
(610) 522-4330
Gr: 9-12 | 1,194 student Student-teacher ratio: 15:1 Minority enrollment: 91%
Rank: #1616.
Chester Charter Scholars Academy Charter School
Charter School
(Math: 8% | Reading: 38%)
Rank:
Rank:
2/
Bottom 50%10
1500 Highland Avenue
Chester, PA 19013
(610) 859-3010
Chester, PA 19013
(610) 859-3010
Gr: K-12 | 701 students Student-teacher ratio: 13:1 Minority enrollment: 99%
Rank: #1717.
Penn Wood High School
(Math: 5% | Reading: 39%)
Rank:
Rank:
2/
Bottom 50%10
100 Green Avenue
Lansdowne, PA 19050
(610) 284-8080
Lansdowne, PA 19050
(610) 284-8080
Gr: 9-12 | 1,148 student Student-teacher ratio: 13:1 Minority enrollment: 97%
Rank: #1818.
Delaware County Technical High School - Folcroft
Vocational School
(Math: ≤20% | Reading: 21-39% )
Rank:
Rank:
2/
Bottom 50%10
701 Henderson Boulevard
Folcroft, PA 19032
(610) 583-7620
Folcroft, PA 19032
(610) 583-7620
Gr: 9-12 | 66 students Student-teacher ratio: 3:1 Minority enrollment: 73%
Rank: #1919.
Stem At Showalter
(Math: ≤5% | Reading: 25-29%)
Rank:
Rank:
1/
Bottom 50%10
1100 West 10th Street
Chester, PA 19013
(610) 447-3401
Chester, PA 19013
(610) 447-3401
Gr: 7-12 | 477 students Student-teacher ratio: 14:1 Minority enrollment: 99%
Rank: #2020.
Chester High School
(Math: ≤10% | Reading: 10-14%)
Rank:
Rank:
1/
Bottom 50%10
232 West 9th St
Chester, PA 19013
(610) 447-3700
Chester, PA 19013
(610) 447-3700
Gr: 9-12 | 806 students Student-teacher ratio: 16:1 Minority enrollment: 99%
Rank: n/an/a
Delaware County Technical High School - Marple
Vocational School
85 Malin Road
Aston, PA 19014
(484) 423-7003
Aston, PA 19014
(484) 423-7003
Gr: 9-12
Rank: n/an/a
600 Cypress St
Lansdowne, PA 19050
(610) 284-8000
Lansdowne, PA 19050
(610) 284-8000
Gr: 9 | 379 students Student-teacher ratio: 47:1 Minority enrollment: 96%
Frequently Asked Questions
What are the top-ranked public high schools in Delaware County, PA?
The top-ranked public high schools in Delaware County, PA include Harriton Sr. High School, Radnor Sr. High School and Springfield High School. Delaware County has one of the highest concentrations of top-ranked public schools in Pennsylvania.
How many public high schools are located in Delaware County?
22 public high schools are located in Delaware County.
What is the racial composition of students in Delaware County?
Delaware County public high schools minority enrollment is 51% of the student body (majority Black), which is more than the Pennsylvania public high schools average of 40% (majority Hispanic and Black).
Which public high schools in Delaware County are often viewed compared to one another?
Popular comparisons of public high schools in Delaware County include: Delaware County Technical High School - Folcroft vs. Delaware County Technical High School - Aston, Stem At Showalter vs. Chester High School, Delaware County Technical High School - Folcroft vs. Delaware County Technical High School - Marple
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