Harriton Sr. High School (Ranked Top 5% for 2025-26)

600 N Ithan Ave
Bryn Mawr, PA 19010

( shown in map)

10/

Top 5%

Harriton Senior High School, also known simply as Harriton High School, is a public secondary school in Rosemont, Pennsylvania, serving portions of Lower Merion Township, Pennsylvania. The school is located on the Philadelphia Main Line.

Serving 1,206 students in grades 9-12, Harriton Sr. High School ranks in the top 5% of all schools in Pennsylvania for overall test scores (math proficiency is top 5%, and reading proficiency is top 5%).

The percentage of students achieving is 78% (which is higher than the Pennsylvania state average of 38%). The percentage of students achieving is 91% (which is higher than the Pennsylvania state average of 55%).

The student-teacher ratio of 10:1 is lower than the Pennsylvania state level of 13:1.

Minority enrollment is 31% of the student body (majority Asian and Black), which is lower than the Pennsylvania state average of 39% (majority Hispanic and Black).

Quick Facts (2025-26)

Grades: 9-12
Enrollment: 1,206 students
Student-Teacher Ratio: 10:1
Minority Enrollment: 31%
: 97% (Top 5% in PA)
: Top 5%
: 78% (Top 5%)
: 91% (Top 1%)
: ≥50% (Btm 50%)
Source: National Center for Education Statistics (NCES), PA Dept. of Education

Top Rankings

Harriton Sr. High School ranks among the top 20% of public schools in Pennsylvania for:

School Overview

Harriton Sr. High School's student population of 1,206 students has stayed relatively flat over five school years.

The teacher population of 118 teachers has stayed relatively flat over five school years.

Grades Offered

Grades 9-12
(No virtual instruction)

View Data

Distribution of Students By Grade Trends
Grade	Harriton Sr. High School
9	288
10	276
11	299
12	343

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Total Students

1,206 students

View Data

Total Students Trends Over Years (1987-2023)
Year	Harriton Sr. High School
2023	1,261
2022	1,287
2021	1,275
2020	1,210
2019	1,210
2018	1,217
2017	1,217
2016	1,222
2015	1,154
2014	1,179
2013	1,184
2012	1,083
2011	1,001
2010	893
2009	789
2008	824
2007	842
2006	884
2005	861
2004	831
2003	791
2002	726
2001	711
2000	681
1999	633
1998	601
1997	557
1996	543
1995	531
1994	513
1993	517
1992	533
1991	531
1990	610
1989	662
1988	757
1987	824

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Gender %

Total Classroom Teachers

118 teachers

View Data

Total Classroom Teachers Trends Over Years (1987-2023)
Year	Harriton Sr. High School
2023	118
2022	118
2021	114
2020	113
2019	113
2018	109
2017	109
2016	110
2015	112
2014	106
2013	106
2012	89
2011	93
2010	88
2009	79
2008	81
2007	79
2006	75
2005	70
2004	67
2003	67
2002	65
2001	57
2000	54
1999	49
1998	47
1997	47
1996	43
1995	42
1994	44
1993	43
1992	49
1991	51
1990	54
1989	52
1988	52
1987	57

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Year Founded

1958

Colors

White, Black, Red

School Calendar

Last Day of School

Wed. Jun 17, 2026

School Motto

'Enter to Learn, Go Forth to Serve'

School Rankings

Harriton Sr. High School ranks within the top 5% of all 2,733 schools in Pennsylvania (based off of combined math and reading proficiency testing data).

The of Harriton Sr. High School is 0.50, which is less than the diversity score at state average of 0.59. The school's diversity has stayed relatively flat over five school years.

This School

State Level (PA)

#37 out of 2733 schools
(Top 5%)

View Data

Overall School Rank Trends Over Years (2011-2023)
Year	Harriton Sr. High School
2023	#37
2022	#57
2019	#28
2018	#69
2017	#91
2016	#19
2015	#21
2014	#282
2013	#232
2012	#710
2011	#661

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78%

38%

View Data

Math Proficiency Comparison Over Years (2012-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	78%	38%	79%
2022	81%	36%	75%
2021	85%	38%	74%
2019	87%	45%	79%
2018	82%	45%	76%
2017	81%	46%	77%
2016	90%	46%	77%
2015	89%	43%	75%
2014	87%	72%	93%
2013	88%	73%	92%
2012	86%	74%	92%

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91%

55%

View Data

Reading and Language Arts Proficiency Comparison Over Years (2010-2022)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2022	91%	55%	86%
2019	94%	62%	88%
2018	91%	63%	76%
2017	92%	63%	88%
2016	95%	62%	88%
2015	94%	62%	88%
2014	89%	70%	91%
2013	91%	70%	91%
2012	84%	71%	90%
2011	89%	73%	91%
2010	90%	72%	91%

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≥50%

57%

View Data

Science Proficiency Comparison Over Years (2021-2022)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2022	50%	57%	87%
2021	92%	64%	89%

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Student-Teacher Ratio

10:1

13:1

View Data

Student-Teacher Ratio Comparison Over Years (1987-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	11:1	13:1	11:1
2022	11:1	13:1	11:1
2021	11:1	14:1	12:1
2020	11:1	14:1	12:1
2019	11:1	14:1	12:1
2018	11:1	15:1	12:1
2017	11:1	14:1	12:1
2016	11:1	15:1	12:1
2015	10:1	15:1	12:1
2014	11:1	15:1	12:1
2013	11:1	15:1	12:1
2012	12:1	15:1	12:1
2011	11:1	14:1	11:1
2010	10:1	14:1	11:1
2009	10:1	14:1	11:1
2008	10:1	14:1	11:1
2007	11:1	16:1	12:1
2006	12:1	16:1	13:1
2005	12:1	16:1	13:1
2004	12:1	16:1	13:1
2003	12:1	16:1	13:1
2002	11:1	16:1	13:1
2001	12:1	17:1	13:1
2000	13:1	17:1	13:1
1999	13:1	17:1	14:1
1998	13:1	18:1	14:1
1997	12:1	18:1	14:1
1996	13:1	18:1	14:1
1995	13:1	19:1	15:1
1994	12:1	19:1	15:1
1993	12:1	19:1	15:1
1992	11:1	17:1	14:1
1991	10:1	17:1	13:1
1990	11:1	17:1	13:1
1989	13:1	17:1	13:1
1988	15:1	17:1	14:1
1987	14:1	18:1	14:1

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American Indian

n/a

Asian

11%

View Data

Asian Student Percentage Comparison Over Years (1991-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	12%	5%	11%
2022	11%	4%	12%
2021	10%	4%	12%
2020	9%	4%	11%
2019	9%	4%	11%
2018	9%	4%	11%
2017	9%	4%	11%
2016	8%	4%	10%
2015	8%	4%	11%
2014	7%	4%	10%
2013	7%	4%	10%
2012	6%	3%	10%
2011	5%	4%	9%
2010	6%	4%	10%
2009	6%	4%	9%
2008	6%	3%	7%
2007	5%	3%	7%
2006	4%	3%	6%
2005	4%	2%	7%
2004	5%	2%	6%
2003	5%	3%	6%
2002	4%	2%	5%
2001	4%	2%	5%
2000	3%	2%	4%
1999	4%	2%	4%
1998	5%	2%	5%
1997	4%	2%	5%
1996	4%	2%	4%
1995	4%	2%	3%
1994	3%	2%	4%
1993	3%	2%	3%
1992	3%	2%	3%
1991	2%	2%	3%

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Hispanic

15%

View Data

Hispanic Student Percentage Comparison Over Years (1989-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	5%	14%	6%
2022	5%	14%	6%
2021	6%	13%	6%
2020	6%	12%	6%
2019	6%	12%	6%
2018	3%	11%	4%
2017	3%	11%	4%
2016	2%	10%	4%
2015	2%	10%	3%
2014	3%	9%	3%
2013	3%	9%	3%
2012	2%	9%	3%
2011	2%	8%	2%
2010	3%	9%	2%
2009	3%	7%	2%
2008	2%	7%	2%
2007	2%	7%	2%
2006	1%	6%	2%
2005	1%	6%	1%
2004	1%	6%	1%
2003	1%	5%	1%
2002	1%	5%	1%
2001	1%	5%	1%
2000	1%	4%	1%
1999	1%	4%	1%
1998	1%	4%	1%
1997	1%	4%	1%
1995	1%	3%	1%
1994	2%	3%	1%
1990	1%	3%	1%
1989	1%	2%	1%

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Black

14%

View Data

Black Student Percentage Comparison Over Years (1991-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	7%	14%	9%
2022	7%	14%	8%
2021	6%	15%	8%
2020	6%	15%	8%
2019	6%	15%	8%
2018	7%	15%	8%
2017	7%	15%	8%
2016	8%	15%	8%
2015	8%	15%	8%
2014	9%	15%	8%
2013	10%	15%	8%
2012	10%	15%	8%
2011	10%	15%	8%
2010	8%	15%	8%
2009	6%	16%	8%
2008	7%	16%	8%
2007	6%	16%	8%
2006	8%	16%	8%
2005	8%	16%	7%
2004	6%	16%	7%
2003	6%	15%	7%
2002	7%	15%	7%
2001	7%	15%	7%
2000	8%	15%	8%
1999	6%	15%	8%
1998	7%	15%	7%
1997	7%	14%	7%
1996	7%	14%	8%
1995	7%	14%	8%
1994	8%	14%	7%
1993	9%	13%	8%
1992	8%	13%	8%
1991	6%	13%	7%

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White

69%

61%

View Data

White Student Percentage Comparison Over Years (1991-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	70%	62%	65%
2022	71%	63%	66%
2021	73%	63%	67%
2020	76%	65%	69%
2019	76%	65%	69%
2018	79%	66%	73%
2017	79%	66%	73%
2016	81%	68%	74%
2015	81%	68%	75%
2014	80%	69%	77%
2013	79%	70%	78%
2012	80%	71%	78%
2011	81%	71%	79%
2010	82%	72%	80%
2009	85%	73%	81%
2008	85%	74%	83%
2007	87%	74%	83%
2006	87%	75%	84%
2005	87%	76%	85%
2004	88%	76%	86%
2003	88%	77%	86%
2002	88%	78%	87%
2001	88%	78%	87%
2000	88%	79%	86%
1999	89%	79%	87%
1998	87%	79%	87%
1997	88%	80%	87%
1996	89%	80%	87%
1995	88%	81%	88%
1994	87%	81%	88%
1993	88%	82%	88%
1992	89%	82%	88%
1991	92%	82%	89%

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Hawaiian

n/a

Two or more races

View Data

Two or More Races Student Percentage Comparison Over Years (2013-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	6%	5%	9%
2022	6%	5%	8%
2021	5%	5%	7%
2020	3%	4%	6%
2019	3%	4%	6%
2018	2%	4%	4%
2017	2%	4%	4%
2016	1%	3%	4%
2015	1%	3%	3%
2014	1%	3%	2%
2013	1%	2%	1%

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All Ethnic Groups

0.50

0.59

View Data

Diversity Score Comparison Over Years (1991-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	0.49	0.58	0.55
2022	0.48	0.57	0.53
2021	0.45	0.57	0.53
2020	0.41	0.54	0.50
2019	0.41	0.54	0.50
2018	0.37	0.53	0.46
2017	0.37	0.53	0.46
2016	0.33	0.51	0.44
2015	0.33	0.51	0.42
2014	0.36	0.50	0.39
2013	0.36	0.48	0.39
2012	0.35	0.47	0.37
2011	0.33	0.47	0.36
2010	0.31	0.46	0.34
2009	0.27	0.44	0.33
2008	0.27	0.43	0.30
2007	0.24	0.42	0.30
2006	0.24	0.41	0.28
2005	0.24	0.40	0.26
2004	0.22	0.40	0.26
2003	0.22	0.39	0.26
2002	0.22	0.37	0.24
2001	0.22	0.37	0.24
2000	0.22	0.35	0.26
1999	0.20	0.35	0.23
1998	0.24	0.35	0.23
1997	0.21	0.34	0.23
1996	0.20	0.34	0.23
1995	0.21	0.33	0.22
1994	0.23	0.33	0.23
1993	0.22	0.31	0.22
1992	0.20	0.31	0.21
1991	0.15	0.31	0.21

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97%

87%

View Data

Graduation Rate Comparison Over Years (2013-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	97%	87%	97%
2022	99%	87%	97%
2021	99%	87%	97%
2020	96%	87%	96%
2019	96%	86%	97%
2018	98%	86%	97%
2017	99%	86%	99%
2016	97%	86%	96%
2015	96%	86%	97%
2014	96%	86%	96%
2013	98%	85%	96%

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Eligible for

15%

60%

View Data

Free Lunch Eligibility Comparison Over Years (2003-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	13%	54%	14%
2022	11%	50%	12%
2021	12%	49%	12%
2020	9%	48%	9%
2019	9%	48%	9%
2018	9%	41%	8%
2017	9%	41%	8%
2016	10%	44%	9%
2015	9%	41%	8%
2014	8%	38%	7%
2013	9%	36%	7%
2012	8%	34%	6%
2011	7%	33%	5%
2010	6%	31%	4%
2009	6%	27%	5%
2008	5%	25%	4%
2007	3%	24%	3%
2006	5%	25%	4%
2005	4%	22%	4%
2004	3%	22%	3%
2003	4%	23%	4%

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Eligible for

View Data

Reduced-Price Lunch Eligibility Comparison Over Years (2002-2023)
Year	Harriton Sr. High School	Pennsylvania	Lower Merion School District
2023	1%	2%	1%
2021	1%	2%	1%
2020	1%	3%	1%
2019	1%	3%	1%
2018	1%	3%
2017	1%	3%
2016	1%	3%	1%
2015	2%	5%	1%
2014	2%	5%	1%
2013	2%	5%	2%
2012	3%	6%	2%
2011	2%	6%	2%
2010	3%	7%	2%
2009	3%	7%	2%
2008	2%	6%	2%
2007	1%	6%	1%
2006	1%	7%	1%
2005	1%	6%	1%
2004	1%	6%	1%
2003	1%	6%	1%
2002	1%	6%	2%

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School Statewide Testing

School District Name

Lower Merion School District

Source: National Center for Education Statistics (NCES), PA Dept. of Education

Profile last updated: 02/09/2025

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Frequently Asked Questions

What is Harriton Sr. High School's ranking?

Harriton Sr. High School is ranked #37 out of 2,733 schools, which ranks it among the top 5% of public schools in Pennsylvania.

What schools are Harriton Sr. High School often compared to?

Harriton Sr. High Schoolis often viewed alongside schools like Lower Merion High School, Radnor Sr. High School by visitors of our site.

What percent of students have achieved state testing proficiency in math and reading?

78% of students have achieved math proficiency (compared to the 38% PA state average), while 91% of students have achieved reading proficiency (compared to the 55% PA state average).

What is the graduation rate of Harriton Sr. High School?

The graduation rate of Harriton Sr. High School is 97%, which is higher than the Pennsylvania state average of 87%.

How many students attend Harriton Sr. High School?

1,206 students attend Harriton Sr. High School.

What is the racial composition of the student body?

69% of Harriton Sr. High School students are White, 11% of students are Asian, 8% of students are Black, 6% of students are Hispanic, and 6% of students are Two or more races.

What is the student-teacher ratio of Harriton Sr. High School?

Harriton Sr. High School has a student ration of 10:1, which is lower than the Pennsylvania state average of 13:1.

What grades does Harriton Sr. High School offer ?

Harriton Sr. High School offers enrollment in grades 9-12 (No virtual instruction).

What school district is Harriton Sr. High School part of?

Harriton Sr. High School is part of Lower Merion School District.