publichighGrade 9-12

Building 21

6501 Limekiln Pike, Philadelphia, PA 19138, United States

+1 (215) 400-7450

N/A

Overall Rating

Location

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Building 21 Overview

About This School

Building 21 is a public high in Philadelphia, Pennsylvania, serving 371 students in grades Grade 9-12. The school maintains a student-teacher ratio of 20:1 with 18 teachers on staff, while the average teacher salary is $71,250. Counseling resources include a ratio of 185 students per counselor. Students at the school are 54% male and 46% female. The student body is 91% Black, 5% Hispanic, 2% Two or More Races, and 1% Asian.

371

Total Students

Grade 9-12

20:1

Student-Teacher Ratio

18 full-time teachers

Academic Performance

Percentage of students who met or exceeded state standards

English Language Arts0%

Mathematics0%

Science0%

School Information

School Type

public

Grade Levels

Grade 9-12

County

Philadelphia County

Students per Counselor

185:1

Building 21 Academics & Test Scores

Test Scores

State assessment results showing percentage of students proficient or above

N/A

English Language Arts

N/A

Mathematics

N/A

Science

Class Information

20:1

Student-Teacher Ratio

City Avg: 14.4:1

State Avg: 12.6:1

185

Students per Counselor

Building 21 Teachers & Staff

Teaching Staff

Total Full-Time Teachers

Average Teacher Salary

$71,250

City Avg: $74,517

State Avg: $81,409

Based on state average salaries for full-time teachers

Support Staff

Student-Teacher Ratio20:1

Students per Counselor185:1

Building 21 Student Demographics

Student Body

54.18%

Male

45.82%

Female

Total Enrollment: 371 students

Racial & Ethnic Diversity

White0.27%

Hispanic5.39%

Asian0.81%

Black91.37%

Two or More Races2.16%

Native American0%

Building 21 Reviews

Frequently Asked Questions About Building 21

Q: What is Building 21?

A: Building 21 is a high public located in Philadelphia.

Q: How many students attend Building 21?

A: Building 21 has approximately 371 students enrolled.

Q: What is the student-teacher ratio at Building 21?

A: The student-teacher ratio at Building 21 is 20:1.

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Detailed Information about Building 21

Data sourced from NCES, CCD, and state education agencies. Last verified: May 2026. See methodology →

Schoolary Research Team

Verified with NCES & state education agency data

About Building 21 - Philadelphia, PA

Quick Facts about Building 21
School Name	Building 21
School Type	public
Grade Levels	Grade 9-12
Location	6501 Limekiln Pike, Philadelphia, PA 19138, Philadelphia, PA
County	Philadelphia County
Phone	+1 (215) 400-7450
Total Students	371
Student-Teacher Ratio	20:1
Full-Time Teachers	18
Rating	/10
ELA Proficiency	%
Math Proficiency	%
Science Proficiency	%

Frequently Asked Questions about Building 21

What is Building 21?

Building 21 is a high public located in Philadelphia.

How many students attend Building 21?

Building 21 has approximately 371 students enrolled.

What is the student-teacher ratio at Building 21?

The student-teacher ratio at Building 21 is 20:1.

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