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C

Building 21 Allentown

PublicHighGrades 9–12

265 Lehigh St, Allentown, PA 18102 · (484) 765-4400 · Part of Allentown City School District

Allentown’s School Grade D better than 12% of Pennsylvania school districts

Directions
Students
415
Students per teacher
16:1
Setting
City
Grades
9–12
The gist

What stands out about Building 21 Allentown

  • Its own letter, C: better results than 33% of Pennsylvania’s public schools
  • Math proficiency 12 pts above the state
  • Reading / language arts 31 pts below the state

On the path

Where Allentown kids come from and go next. The whole path →

6–84 middle schoolsDepends on your address
9–12Building 21 AllentownYou are here

Test scores

2020–21
Math proficiency50%
State average 37.3%
Reading / language arts24%
State average 55%

Its own letter, C, places these results among Pennsylvania’s 2,693 public schools with results. Source: EDFacts via Urban Institute Education Data Portal (SY2020-21).

Location

Directions ↗

265 Lehigh St, Allentown

Students

Enrollment by grade
Grade 9119
Grade 10115
Grade 11101
Grade 1280
Enrollment over time
414’20
446’21
439’22
411’23
415’24

About steady since 2020–21.

Who goes here
Hispanic 81%Black 9%Two or more races 5%White 3%Asian <1%Native Hawaiian/Pacific Islander <1%

As reported to NCES, share of students with a reported race or ethnicity.

Parents talk

Questions and answers about Building 21 Allentown from Allentown families.

Other schools in Allentown City School District

The district →
Central El Sch
Elementary · Grades PK–5 · Allentown
D
694 students14:1
Union Terrace El Sch
Elementary · Grades PK–5 · Allentown
C+
674 students16:1
Roosevelt El Sch
Elementary · Grades PK–5 · Allentown
D
631 students16:1
Muhlenberg El Sch
Elementary · Grades PK–5 · Allentown
C
606 students19:1
Mosser El Sch
Elementary · Grades PK–5 · Allentown
D
551 students14:1
Jackson Early Childhood Center
Elementary · Grades PK–K · Allentown
212 students13:1

School facts: U.S. Department of Education (NCES), 2024–2025 school year. Test scores: EDFacts via Urban Institute Education Data Portal (SY2020-21). A school’s letter is our own summary of its reading and math results against Pennsylvania’s other public schools; Allentown’s School Grade is built from its districts’ results. Map: © OpenStreetMap contributors.