1
Enrollment
1,239
High
DISTRICT 1,457 · STATE 738
SCHOOL COMMUNITY·LOWER MERION SD·NCES 421416003296
Harriton SHS
600 N Ithan Ave, Rosemont, PA 19010 · (610) 658-3950 · Montgomery County
GRADES 09–12HIGH21-SUBURBREGULAR SCHOOL1,239 STUDENTS
A+
allk12 Grade
Scored higher than 97% of Pennsylvania public high schools
- A+Test scores Share of students meeting the state standard in reading, math, and other tested subjects, 2023-24 and 2024-25.
- ABeats expectations How far test scores land above or below what the share of low-income students predicts for a school in this state.
- ·Three-year trend Not available for this school, so the grade uses the other parts.
Grades compare a school only with schools in the same state, because every state gives its own test. How grades work · Top-graded Pennsylvania public high schools
Student : Teacher
10.7:1
116 FTE teachers
DISTRICT 11.1:1 · STATE 12.8:1
Free / Reduced Lunch
16%
193 students
DISTRICT 16% · STATE 75%
Community
1
0 members
Enrollment and student:teacher ratio compared against other high schools. Free/Reduced Lunch and demographics compared against all schools.
Enrollment by grade, 2024-25
| Grade | Students | Share |
|---|---|---|
| Grade 9 | 332 | 27% |
| Grade 10 | 309 | 25% |
| Grade 11 | 292 | 24% |
| Grade 12 | 306 | 25% |
Student demographics
54%Diversity index
The chance that two students picked at random belong to different racial or ethnic groups.
DISTRICT 57% · STATE 59% · US 70%
Student head counts by race/ethnicity from federal NCES enrollment data. District, state, and US figures are each group's share of all public school students in that area (US excludes territories). Very small groups may be suppressed in the source, so categories do not always sum exactly to total enrollment.
Gender split
Test scores
PSSA + Keystone 2024-25 . % Proficient or AdvancedEnglish Language Arts
92.3%
PA avg 51.1% . -0.5pp since 2023
Math
81.1%
PA avg 43.0% . -0.6pp since 2023
What this means: On the PSSA + Keystone, Pennsylvania's statewide test, about 92 of every 100 students at this school read and write at grade level and about 81 of 100 do math at grade level. Across all Pennsylvania schools, those numbers are about 51 and 43. Reading and writing scores have held steady since 2023, while math scores have held steady.
PSSA + Keystone results by year
| School year | English Language Arts | Math |
|---|---|---|
| 2024-25 | 92.3% | 81.1% |
| 2023-24 | 92.8% | 81.7% |
% Proficient or Advanced, all students and all tested grades.
Source: PSSA + Keystone. All students, all grades. See all years and grades →
BeatsExpectations
Demographically-adjusted score · methodologyTier
AS EXPECTED
Performing as predicted given the school's student profile
Actual proficiency
86.0%
composite math + reading, all grades
Predicted
70.9%
based on PA schools with similar FRL share
Beats by
+15.1pp
above demographic expectation
What this means: About 86% of students here test proficient in math and reading, compared with the roughly 71% typical for Pennsylvania schools with a similar share of low-income students. BeatsExpectations measures results against demographically similar schools rather than by raw scores, and this school falls within the typical range, neither among Pennsylvania's top nor bottom 10%.
BeatsExpectations runs a per-state regression of proficiency on free/reduced-lunch share, then scores each school by residual. How this is calculated →
Schools most like Harriton SHS
Harriton SHS's state test result (86.0% proficient) is higher than 4 of the 5 schools below with a result.
| School | Students | Low-income | Proficient |
|---|---|---|---|
| Harriton SHS this school | 1,239 | 15.6% | 86.0% |
| Radnor SHS Radnor | 1,146 | 16.0% | 84.5% |
| Methacton High School Eagleville | 1,499 | 22.1% | 65.1% |
| Upper Saint Clair High School Pittsburgh | 1,269 | 14.3% | 84.7% |
| Strath Haven High School Wallingford | 1,175 | 20.7% | 77.0% |
| Lower Merion High School Ardmore | 1,674 | 21.9% | 86.9% |
Matched among Pennsylvania high schools on enrollment, the share of students from low-income families (eligible for free or reduced-price lunch), and racial and ethnic makeup. Proficient is the average share of students meeting the state standard across all of the school's state tests in 2023-24 and 2024-25, the same combined score our test-score rankings use. Online schools and schools serving specialized populations are not matched.
Where Harriton SHS ranks
Among high schools| Measure | This school | In Pennsylvania | In Montgomery County |
|---|---|---|---|
| State test proficiency ranked highest first | 86.0% | #7 of 576 | #2 of 23 |
| Math proficiency ranked highest first | 81.1% | #13 of 626 ▼ 4 | #2 of 23 ▼ 1 |
| Reading proficiency ranked highest first | 92.3% | #8 of 626 ▲ 5 | #2 of 23 ▼ 1 |
| Enrollment ranked largest first | 1,239 | #121 of 713 | #15 of 28 |
| Students per teacher ranked fewest first | 10.7:1 | #48 of 601 | #1 of 22 |
| Diversity index ranked most diverse first | 53.9% | #127 of 604 | #12 of 22 |
| Free and reduced lunch ranked highest share first | 15.6% | #604 of 619 | #23 of 23 |
| Enrollment change since 2017-18 ranked fastest growth first | +2.9% | #172 of 221 | #15 of 16 |
Ranked against other public high schools. Online schools are left out of every list, and test-score lists leave out schools that serve specialized populations. Each rank links to the full list. Arrows under a test-score rank show places moved since the prior test year, among schools tested both years.
4-year change
SY 2020-21 vs SY 2024-25Enrollment
1,239
-36 (-3%) vs 2020
+133% since 1990-91, when it was 531
Student : Teacher
10.7:1
was 11.2:1
Source: NCES Common Core of Data
Enrollment and staffing by year
| School year | Students | Teachers (FTE) | Students per teacher | Free and reduced lunch |
|---|---|---|---|---|
| 2024-25 | 1,239 | 115.7 | 10.7:1 | 16% (193) |
| 2023-24 | 1,206 | 118.1 | 10.2:1 | 16% (193) |
| 2022-23 | 1,261 | 118.1 | 10.7:1 | 14% (174) |
| 2020-21 | 1,275 | 114 | 11.2:1 | 12% (155) |
| 2017-18 | 1,204 | 111.8 | 10.8:1 | 13% (152) |
| 2015-16 | 1,222 | 109 | 11.2:1 | 12% (152) |
| 2010-11 | 1,001 | 92 | 10.9:1 | 9% (92) |
| 2000-01 | 711 | 57 | 12.5:1 | 5% (38) |
| 1990-91 | 531 | 50 | 10.6:1 | N/A |
Source: NCES Common Core of Data. Rows are the federal collections on file for Harriton SHS.
Since 2017-18: students up 3% (1,204 to 1,239); teachers up 3% (111.8 to 115.7).
About Harriton SHS
Harriton SHS is a large high school with an address in Rosemont, Pennsylvania. The school serves grades 9 through 12. Enrollment is 1,239 students. High schools in Pennsylvania have about 738 students on average; enrollment here is 68% higher.
Lower Merion SD runs 11 schools with a combined 8,533 students. Harriton SHS is one of them.
More than half of the students at Harriton SHS are White (65%). Beyond that, enrollment is 13% Asian, 8% Black, 7% Hispanic, and 6% multiracial. On the diversity index, which measures the chance that two random students are from different groups, Harriton SHS scores 54%.
Harriton SHS reports a ratio of 10.7 students per teacher, from 115.7 full-time-equivalent teachers. The school's 10.7:1 compares with an average of 12.8:1 for high schools in Pennsylvania. Lunch program data show 16% of students are eligible for free or reduced-price meals. That is 24 points below the 40% average for public schools in Montgomery County.
Among Pennsylvania public high schools, Harriton SHS outscored 97%, which works out to an A+ on the allk12 Grade.
On BeatsExpectations, Harriton SHS is 15.1 points above its prediction, a result in the middle 80% of Pennsylvania schools.
In Montgomery County, where the school is located, the median household earns about $113,915 a year, 53% of adults hold a bachelor's degree or higher, and about 4% of people live in poverty. Counting Harriton SHS, Montgomery County has 160 public schools.
A public school about 1.3 miles away, Black Rock Middle School, is the closest to Harriton SHS. Harriton SHS has at least 8 other public schools within five miles. The nearest schools with test data average 80.7%, lower than Harriton SHS's 86.0%.
Harriton SHS has an NCES locale of Suburb: Large.
Enrollment decreased by 3% across 4 years, from 1,275 in 2020-21 to 1,239 in 2024-25.
The Harriton SHS discussion page is a place for special education services, counseling, and support programs. Teachers and staff are welcome to share updates too.
Montgomery County at a glance
View full county profilePopulation
867,573
Census ACS
Median income
$113,915
Household, ACS
Bachelor's+
53%
Adults 25+
Poverty rate
4%
Below federal line
Schools in county
160
115,302 students
Quick facts
Related schools
Other schools in Lower Merion SD
- Lower Merion High SchoolHigh · 1,674 students
- Black Rock Middle SchoolMiddle · 1,077 students
- Bala-Cynwyd Middle SchoolMiddle · 794 students
- Welsh Valley Middle SchoolMiddle · 788 students
- Penn Wynne SchoolElementary · 621 students
- Gladwyne SchoolElementary · 556 students
Nearby schools
- Black Rock Middle School1.3 mi · 1,077
- Gladwyne School2.1 mi · 556
- Radnor SHS2.3 mi · 1,146
- Conshohocken Elementary School2.3 mi · 247
- Radnor Elementary School2.4 mi · 554
- Coopertown Elementary School2.4 mi · 471
Frequently asked questions
About Harriton SHSHow many students attend Harriton SHS?
Harriton SHS enrolls approximately 1,239 students in grades 09-12.
Is Harriton SHS an elementary, middle, or high school?
Harriton SHS is a high school covering grades 09-12.
How many teachers does Harriton SHS have?
Harriton SHS employs 116 FTE teachers, for a student-to-teacher ratio of 10.7:1.
What is the student diversity at Harriton SHS?
Student demographics at Harriton SHS are roughly 65% White, 7% Hispanic, 8% Black, 13% Asian, 6% Two or more.
Who oversees Harriton SHS?
Harriton SHS is overseen by Lower Merion SD in Montgomery County.
Data sourceSchool profile facts are sourced from the NCES. Community content is posted by allk12 members.