Lower Merion HS
🇺🇸 Official data · 2025Ardmore, Pennsylvania 19003 · Lower Merion SD
#7 of 618 high schools in Pennsylvania
#169 of 16,910 nationally
About Lower Merion HS
Lower Merion HS is a public high located in Ardmore, in the Lower Merion SD school district of Pennsylvania, United States. It caters for Grades 9–12. In 2025 it enrolled 1,674 students. Traditional public schools run by a school district; free to attend.
Its Success Index (US) is 91.4 out of 100, placing it in the top 5% of high schools in United States and 7th of 618 ranked high schools in Pennsylvania. Its strongest component is reading proficiency (97th percentile), and its weakest is students per teacher (77th percentile).
Other published figures: enrollment 1,674.
There are 2 schools in Ardmore; Lower Merion HS ranks 1st of 2 scored schools there.
Success Index (US) breakdown
Each component is a percentile against high schools across United States.
- Math proficiency (30%)87%
- Reading proficiency (30%)95%
- Community advantage (fewer free/reduced-price lunch) (25%)21.9%
- Students per teacher (15%)11.6
The Success Index (US) summarises published data about a school community. It is not a measure of teaching quality. Read the methodology.
Published measures
All figures published for Lower Merion HS by the official sources.
- Enrollment
- 1,674
- Students enrolled in the latest NCES directory year.
- Free/reduced-price lunch
- 21.9%
- Share of students eligible for free or reduced-price lunch.
- Students per teacher
- 11.6
- Enrollment divided by FTE teachers; not class size.
- Reading proficiency
- 95%
- Share of tested students proficient or above (all students, all grades).
- Math proficiency
- 87%
- Share of tested students proficient or above (all students, all grades).
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Schools near Lower Merion HS
Closest schools by straight-line distance, with their Success Index (US).
Penn Valley Sch
Narberth · Public elementary · Grades K–4
542 students · 1.8 km away
Merion El Sch
Merion Station · Public elementary · Grades K–4
438 students · 2.2 km away
Chestnutwold El Sch
Ardmore · Public elementary · Grades K–5
566 students · 2.2 km away
Penn Wynne Sch
Wynnewood · Public elementary · Grades K–4
621 students · 2.6 km away
Gladwyne Sch
Gladwyne · Public elementary · Grades K–4
556 students · 2.6 km away
Welsh Valley MS
Narberth · Public middle · Grades 5–8
788 students · 3.0 km away
Bala-Cynwyd MS
Bala Cynwyd · Public middle · Grades 5–8
794 students · 3.2 km away
Cynwyd Sch
Bala Cynwyd · Public elementary · Grades K–4
446 students · 3.2 km away
Haverford SHS
Havertown · Public high · Grades 9–12
1,994 students · 3.5 km away
Haverford MS
Havertown · Public middle · Grades 6–8
1,578 students · 3.7 km away
Similar schools
Public high schools in Pennsylvania with a comparable Enrollment.
Council Rock HS North
Newtown · Public high · Grades 9–12
1,674 students
Cedar Crest HS
Lebanon · Public high · Grades 9–12
1,676 students
Norwin HS
North Huntingdon · Public high · Grades 9–12
1,671 students
William Penn SHS
York · Public high · Grades 9–12
1,681 students
Canon-McMillan SHS
Canonsburg · Public high · Grades 9–12
1,660 students
Baldwin SHS
Pittsburgh · Public high · Grades 8–12
1,657 students
Frequently asked questions
Is Lower Merion HS a good school?
Lower Merion HS has a Success Index (US) of 91.4 out of 100 (Top 5% of high schools in United States) and ranks #7 of 618 in Pennsylvania. The index summarises published data about the school community and, where available, attainment; it does not measure teaching quality, so visit the school and ask about support at your child's level.
Where does Lower Merion HS rank in Pennsylvania?
Lower Merion HS ranks #7 of 618 high schools in Pennsylvania and #169 of 16,910 nationally on the Success Index (US) (2025 data).
How many students attend Lower Merion HS?
Lower Merion HS had 1,674 students in 2025.
Is Lower Merion HS a elementary school or a high school?
Lower Merion HS is classified as a high covering Grades 9–12. It is a public school.
What other schools are near Lower Merion HS?
There are 10 schools within 15 km of Lower Merion HS; they are listed on this page with their Success Index (US) and distance, and can be compared side by side.