Largest Schools in Allentown (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 33 schools in Allentown, Pennsylvania. Rank positions shown on each profile are within United States and Pennsylvania.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Parkland HS Allentown · High · Grades 9–12	Public	3,279	79.3 Top 10%	80% Math proficiency	3,279
2	William Allen HS Allentown · High · Grades 9–12	Public	3,074	18.9 Lower 50%	25% Math proficiency	3,074
3	Louis E Dieruff HS Allentown · High · Grades 9–12	Public	1,914	28.8 Lower 50%	32% Math proficiency	1,914
4	Springhouse MS Allentown · Middle · Grades 6–8	Public	1,329	79.8 Top 10%	61% Math proficiency	1,329
5	South Mountain MS Allentown · Middle · Grades 6–8	Public	972	22.8 Lower 50%	17% Math proficiency	972
6	Francis D Raub MS Allentown · Middle · Grades 6–8	Public	876	12.3 Lower 50%	9% Math proficiency	876
7	Brigadier General Anna Mae Hays El Sch Allentown · Elementary · Grades K–5	Public	807	14.9 Lower 50%	99.9% Free/reduced-price lunch	807
8	Trexler MS Allentown · Middle · Grades 6–8	Public	771	15.6 Lower 50%	12% Math proficiency	771
9	Harrison-Morton MS Allentown · Middle · Grades 6–8	Public	704	19.0 Lower 50%	11% Math proficiency	704
10	Luis A. Ramos El Sch Allentown · Elementary · Grades K–5	Public	695	17.2 Lower 50%	25% Math proficiency	695
11	Central El Sch Allentown · Elementary · Grades PK–5	Public	694	12.2 Lower 50%	11% Math proficiency	694
12	Union Terrace El Sch Allentown · Elementary · Grades PK–5	Public	674	18.6 Lower 50%	24% Math proficiency	674
13	Roosevelt El Sch Allentown · Elementary · Grades PK–5	Public	631	21.0 Lower 50%	23% Math proficiency	631
14	Hiram W Dodd El Sch Allentown · Elementary · Grades K–5	Public	627	27.5 Lower 50%	32% Math proficiency	627
15	Muhlenberg El Sch Allentown · Elementary · Grades PK–5	Public	606	27.6 Lower 50%	36% Math proficiency	606
16	Sheridan El Sch Allentown · Elementary · Grades 1–5	Public	591	15.4 Lower 50%	20% Math proficiency	591
17	Parkway Manor Sch Allentown · Elementary · Grades K–5	Public	569	82.7 Top 10%	81% Math proficiency	569
18	Mosser El Sch Allentown · Elementary · Grades PK–5	Public	551	21.9 Lower 50%	27% Math proficiency	551
19	Salisbury SHS Allentown · High · Grades 9–12	Public	546	64.7 Top 50%	62% Math proficiency	546
20	Jefferson El Sch Allentown · Elementary · Grades K–5	Public	522	14.8 Lower 50%	20% Math proficiency	522
21	Kratzer Sch Allentown · Elementary · Grades K–5	Public	510	76.1 Top 25%	69% Math proficiency	510
22	Cetronia Sch Allentown · Elementary · Grades K–5	Public	496	85.3 Top 5%	83% Math proficiency	496
23	Ritter El Sch Allentown · Elementary · Grades K–5	Public	463	25.5 Lower 50%	30% Math proficiency	463
24	Salisbury El Sch Allentown · Elementary · Grades K–4	Public	461	58.0 Top 50%	40% Math proficiency	461
25	Salisbury MS Allentown · Middle · Grades 5–8	Public	448	50.9 Top 50%	23% Math proficiency	448
26	Arts Academy Elementary CS Allentown · Elementary · Grades K–5	Charter	425	22.6 Lower 50%	17% Math proficiency	425
27	Building 21 Allentown Allentown · High · Grades 9–12	Public	415	16.1 Lower 50%	17% Math proficiency	415
28	Washington El Sch Allentown · Elementary · Grades 1–5	Public	362	16.4 Lower 50%	17% Math proficiency	362
29	Arts Academy CS Allentown · Middle · Grades 5–8	Charter	296	40.3 Lower 50%	15% Math proficiency	296
30	Lehigh Parkway El Sch Allentown · Elementary · Grades K–5	Public	276	43.3 Lower 50%	47% Math proficiency	276
31	Jackson Early Childhood Center Allentown · Elementary · Grades PK–K	Public	212	23.4 Lower 50%	123.6% Free/reduced-price lunch	212
32	Ruby Bridge Childhood Center Allentown · Elementary · Grades PK–K	Public	125	54.4 Top 50%	–	125
33	Sonia Sotomayor Dual Lang Immersion Academy Allentown · Elementary · Grades PK–5	Public	112	38.2 Lower 50%	–	112

Parkland HS in Allentown leads the 2025 list of largest schools in Allentown with Enrollment 3,279. Of the 33 schools shown, 31 are public, 2 are charter.

For the full picture see the wider Pennsylvania largest schools rankings, every school on the Allentown page, or the comparison tool to put a shortlist side by side.

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Frequently asked questions

What is the best largest school in Allentown?

Parkland HS in Allentown, Pennsylvania ranks first among largest schools in Allentown with Enrollment 3,279 (Enrollment: 3,279).

How are largest schools in Allentown ranked?

Schools with the highest enrollment. Only schools eligible for the Success Index (US) are included; the index is shown alongside for context.

Are these 2025 rankings official?

No. They are computed by Success Tutoring from official American data (Urban Institute Education Data Portal (NCES CCD, EDFacts); NCES Common Core of Data). States set their own assessments and proficiency cut scores, so proficiency rates are most comparable within a state. Use the state rankings for like-for-like comparisons.