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Building 21 Allentown

Allentown, Pennsylvania · Grades 9 to 12 · Allentown City SD

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About Building 21 Allentown

Building 21 Allentown serves grades 9 through 12 as a public school in Allentown, Pennsylvania. Federal data for 2024-25 shows 415 students enrolled. That makes it one of the smaller public and charter high schools in Allentown. There are about 16 students for every full-time-equivalent teacher (26 teachers in all). Federal locale data places it in a midsize city, in Lehigh County. There are 76 other schools within 5 miles. It is one of 23 schools in Allentown City SD. Federal data from 2021-22 lists it as a magnet school.

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School facts

Address	265 Lehigh St, Allentown, PA 18102
Phone	(484) 765-4400
School district	Allentown City SD
Grades	9 to 12
Students (2024-25)	415
Teachers (full-time equivalent, 2024-25)	26
Students per teacher	16
Charter school	No
Magnet school	Yes, based on the most recent federal magnet data (2021-22)
School type	Regular
Level	High
Locale (NCES)	City, midsize, Lehigh County

Source: NCES Common Core of Data (CCD), 2024-25 public school directory and membership files (NCES school ID 420228007623). Details may have changed since the survey. Schools can update them by claiming this profile.

Nearby schools

Arts Academy Elementary CSCharter · Grades K to 5Allentown · 0.1 mi Roberto Clemente CSCharter · Grades K to 12Allentown · 0.2 mi Grace Montessori SchoolPrivate, Episcopal · Grades PreK to 6Allentown · 0.4 mi Stepping Stones Christian SchoolPrivate, Mennonite · Grades 2 to 11Allentown · 0.5 mi Jefferson El SchPublic · Grades K to 5Allentown · 0.6 mi Central El SchPublic · Grades PreK to 5Allentown · 0.6 mi Allentow Central Catholic High School.Private, Roman Catholic · Grades 9 to 12Allentown · 0.6 mi Harrison-Morton MSPublic · Grades 6 to 8Allentown · 0.7 mi

The 8 closest public, charter and private schools by straight-line distance, from NCES location data. Listings here are never paid.

Frequently asked questions

What grades does Building 21 Allentown serve?

Building 21 Allentown serves grades 9 through 12.

How many students attend Building 21 Allentown?

Building 21 Allentown reported 415 students in 2024-25, according to the NCES Common Core of Data.

What is the student-teacher ratio at Building 21 Allentown?

About 16 students per full-time-equivalent teacher, based on 415 students and 26 teachers in federal data.

Is Building 21 Allentown a public or charter school?

Building 21 Allentown is a traditional public (non-charter) school.

What school district is Building 21 Allentown in?

Building 21 Allentown is part of Allentown City SD. See all schools in this district at https://parentschoolreview.com/districts/pa/allentown-city-sd/

Where is Building 21 Allentown located?

Building 21 Allentown is at 265 Lehigh St, Allentown, PA 18102. The phone number is (484) 765-4400.

How many other schools are near Building 21 Allentown?

There are 76 other schools within 5 miles of Building 21 Allentown in our directory.