Serving 439 students in grades 9-12, Building 21 Allentown ranks in the top 50% of all schools in Pennsylvania for overall test scores (math proficiency is top 50%, and reading proficiency is bottom 50%).
The percentage of students achieving proficiency in math is 40-59% (which is higher than the Pennsylvania state average of 38%). The percentage of students achieving proficiency in reading/language arts is 35-39% (which is lower than the Pennsylvania state average of 55%).
The student:teacher ratio of 16:1 is higher than the Pennsylvania state level of 13:1.
Minority enrollment is 93% of the student body (majority Hispanic), which is higher than the Pennsylvania state average of 38% (majority Black and Hispanic).
Quick Stats (2024-25)
- School Type: Magnet School
- Grades: 9-12
- Enrollment: 439 students
- Student:Teacher Ratio: 16:1
- Minority Enrollment: 93%
- Graduation Rate: 90-94% (Top 50% in PA)
- Math Proficiency: 40-59% (Top 1%)
- Reading Proficiency: 35-39% (Btm 50%)
- Source: National Center for Education Statistics (NCES), PA Dept. of Education
School Overview
Building 21 Allentown's student population of 439 students has declined by 8% over five school years.
The teacher population of 28 teachers has grown by 12% over five school years.
School Type
Grades Offered
Grades 9-12
Total Students
439 students
Gender %
Total Classroom Teachers
28 teachers
Students by Grade
School Rankings
The diversity score of Building 21 Allentown is 0.43, which is less than the diversity score at state average of 0.58. The school's diversity has stayed relatively flat over five school years.
Math Test Scores (% Proficient)
(20-21)40-59%
38%
Reading/Language Arts Test Scores (% Proficient)
35-39%
55%
Student : Teacher Ratio
16:1
13:1
American Indian
n/a
n/a
Asian
n/a
5%
Hispanic
74%
14%
Black
14%
14%
White
7%
62%
Hawaiian
n/a
n/a
Two or more races
5%
5%
All Ethnic Groups
Graduation Rate
90-94%
87%
Eligible for Free Lunch
97%
54%
School Statewide Testing
School District Name
Source: National Center for Education Statistics (NCES), PA Dept. of Education
Frequently Asked Questions
What percent of students have achieved state testing proficiency in math and reading?
40-59% of students have achieved math proficiency (compared to the 38% PA state average), while 35-39% of students have achieved reading proficiency (compared to the 55% PA state average).
What is the graduation rate of Building 21 Allentown?
The graduation rate of Building 21 Allentown is 90-94%, which is higher than the Pennsylvania state average of 87%.
How many students attend Building 21 Allentown?
439 students attend Building 21 Allentown.
What is the racial composition of the student body?
74% of Building 21 Allentown students are Hispanic, 14% of students are Black, 7% of students are White, and 5% of students are Two or more races.
What is the student:teacher ratio of Building 21 Allentown?
Building 21 Allentown has a student ration of 16:1, which is higher than the Pennsylvania state average of 13:1.
What grades does Building 21 Allentown offer ?
Building 21 Allentown offers enrollment in grades 9-12
What school district is Building 21 Allentown part of?
Building 21 Allentown is part of Allentown City School District.
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