PAHighVerified for 2025-26
Building 21 Allentown — School Profile & District Info
High|Allentown, Pennsylvania|Allentown City SD|Last audited: Not yet synced
Allentown, PA 18102
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School Profile
Grades
9–12
Enrollment
411
Student:Teacher
15.8:1
Locale
Urban
District
Allentown City SDEcon. Disadvantaged
100.0%
Phone
(484)765-4400School Statistics
Academics (SY 2020-21)
ELA Proficiency
<50%
Math Proficiency
40-59%
Graduation Rate
75-79%
Chronic Absenteeism
49.2%
SY 2019-20
Programs & Activities (SY 2021-22)
Gifted & Talented
Dual Enrollment
Student-Teacher Ratio: 19.8:1
Worse than average in PADistrict Finance (FY 2023)
Per-Pupil Spending
$18,007
District-level data
Funding Sources
Federal 14%State 57%Local 28%
Community Context
Median Home Value
$349,765
+2.8% YoY
Allentown, PA metro area · Zillow Feb 2026
Community Need Level
Moderate
CDC/ATSDR Social Vulnerability Index 2022
Enrollment Trend (2014-2025)
415
Current enrollment
Stable(-10% 5yr)Full School Calendar 2025-26
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Frequently Asked Questions about Building 21 Allentown
Building 21 Allentown currently enrolls 411 students across High grade levels. The school operates under the local school district in PA.