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BCER

High · Regular · Grades 9 to 12

Building 21 Allentown, Allentown, PA

CEP schoolBuilding 21 Allentown is a public high school in Allentown, part of Allentown City SD. It enrolled 415 students in 2024-25, with 16.0 students per full-time teacher.

Enrollment and teachers

Students
415
Teachers (FTE)
26.0
Students per teacher
16.0
Grades
9 to 12

This school's ratio is about the same as the district figure of 15.9. The Pennsylvania average across schools is 13.5. Ratios count all teachers, including specialists, so they are lower than typical class sizes.

This school16.0
District15.9
Pennsylvania13.5
United States15.3

School details

Address
265 Lehigh St, Allentown, PA 18102
Phone
(484)765-4400
District
Allentown City SD
County
Lehigh County
Level
High
Type
Regular
Status
Open
Charter
No
Locale
City: Midsize
NCES school ID
420228007623
Location from NCES coordinates. Map data OpenStreetMap contributors. Open larger map

School meals

Counts of students eligible for free or reduced-price lunch, as reported to NCES.
Free lunch
411
Reduced-price lunch
0
Free or reduced-price lunch
41199.0% of enrollment.
Community Eligibility Provision
Yes (CEP school)

Schools in the Community Eligibility Provision (CEP) serve free meals to all students, so their free lunch counts often reflect direct certification or total enrollment. Free and reduced lunch shares are not comparable between CEP and non-CEP schools.

Related schools

Other high schools in Allentown City SD

High schools elsewhere in Allentown

We publish official enrollment and staffing data, not ratings or test scores.

Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Blank values are not available, not applicable or suppressed in the source. See the methodology.