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Lower Merion HS

Grades 09–12 · Ardmore, PA · NCES 421416003295

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315 E Montgomery Ave · Ardmore, PA 19003

At a glance

Reported students

1,674

NCES CCD 2024–25

Teachers (FTE)

144.8

NCES CCD 2024–25

Student–teacher ratio

11.6:1

Calculated; not a class-size measure

Grades served

09–12

NCES preliminary directory 2025–26

School benchmarks

Pennsylvania high enrollment

92nd percentile

Compared with 712 same-level schools reporting enrollment.

District median enrollment

621

Lower Merion HS: 1,674 reported students.

State peer staffing position

29th percentile

11.6:1 reported; state peer median 13.3:1. Ratio is not class size.

Historical enrollment and staffing · CRDC 2021–22

These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.

Students
1,626
Teachers (FTE)
129
Student–teacher ratio
12.6:1

What the reported data says about Lower Merion HS

Lower Merion HS is a public high school serving grades 09–12 in Ardmore. It is one of 11 current school records connected to Lower Merion SD. NCES reports 1,674 students for 2024–25.

Among 712 high schools in Pennsylvania with comparable records, this school is larger than the reported median of 571 students. Its enrollment is at approximately the 92nd percentile for that peer group. Size describes the campus, not instructional quality.

The reported student–teacher ratio is 11.6:1, below the Pennsylvania median of 13.3:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.

The largest reported race and ethnicity groups are White (61.5%) and Black (13.2%). English learners represent 1.7% of enrollment. Students served under IDEA represent 14%. These figures help families understand who the school serves; they are not rating inputs.

The 2021–22 civil-rights collection reports AP student enrollment, gifted and talented programming, computer science. The school reported 23 AP courses. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.

Questions worth asking Lower Merion HS

  1. 1How do the reported 11.6:1 student–teacher ratio and 144.8 teacher FTE translate into actual class sizes by grade?
  2. 2Have the reported academic programs changed since the 2021–22 CRDC collection?
  3. 3What counseling support is available today? The school reported 6 counselor FTE in 2021–22.
  4. 4What meal assistance, transportation, after-school, and family-support services are currently available?
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Enrollment needs

English learners
1.7%
Students with disabilities
14%
Lunch program
Yes participating without using any Provision or the CEO

Reported support staff

Counselors (FTE)
6
Nurses (FTE)
2
Psychologists (FTE)
1
Social workers (FTE)
1

CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.

Student demographics

Race and ethnicity share of reported enrollment

  • White61.5%
  • Hispanic5.7%
  • Black13.2%
  • Asian11.1%
  • American Indian / Alaska Native0.1%
  • Native Hawaiian / Pacific Islander0.1%
  • Multiracial8.3%

Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.

Programs reported by the school

AP student enrollment

Students enrolled

23 distinct courses reported

Gifted and talented

Offered

Computer science

Offered

CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.

Other schools in Lower Merion SD

Start with campuses at the same school level or with similar reported enrollment.

Harriton SHS

High · Grades 09–12

1,239 reported students

Black Rock MS

Middle · Grades 05–08

1,077 reported students

Bala-Cynwyd MS

Middle · Grades 05–08

794 reported students

Welsh Valley MS

Middle · Grades 05–08

788 reported students

Penn Wynne Sch

Elementary · Grades KG–04

621 reported students

Gladwyne Sch

Elementary · Grades KG–04

556 reported students

View all 11 district schools →