Largest Schools in Manassas (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 30 schools in Manassas, Virginia. Rank positions shown on each profile are within United States and Virginia.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Charles J. Colgan Sr. High Manassas · High · Grades 9–12	Public	2,956	82.3 Top 10%	85% Math proficiency	2,956
2	Osbourn Park High Manassas · High · Grades 9–12	Public	2,661	69.1 Top 25%	87% Math proficiency	2,661
3	Osbourn High Manassas · High · Grades 9–12	Public	2,301	62.6 Top 50%	72% Math proficiency	2,301
4	Unity Reed High Manassas · High · Grades 9–12	Public	2,042	67.5 Top 25%	83% Math proficiency	2,042
5	Parkside Middle Manassas · Middle · Grades 6–8	Public	1,352	68.9 Top 25%	74% Math proficiency	1,352
6	Louise A. Benton Middle Manassas · Middle · Grades 6–8	Public	1,339	85.1 Top 5%	86% Math proficiency	1,339
7	Herbert J. Saunders Middle Manassas · Middle · Grades 6–8	Public	1,198	73.4 Top 25%	83% Math proficiency	1,198
8	Grace E. Metz Middle Manassas · Middle · Grades 7–8	Public	1,111	60.4 Top 50%	68% Math proficiency	1,111
9	Unity Braxton Middle Manassas · Middle · Grades 6–8	Public	1,055	63.4 Top 50%	58% Math proficiency	1,055
10	Yorkshire Elementary Manassas · Elementary · Grades PK–5	Public	851	61.6 Top 50%	74% Math proficiency	851
11	Mayfield Intermediate Manassas · Middle · Grades 5–6	Public	839	59.5 Top 50%	67% Math proficiency	839
12	Signal Hill Elementary Manassas · Elementary · Grades PK–5	Public	807	68.3 Top 25%	83% Math proficiency	807
13	Bennett Elementary Manassas · Elementary · Grades PK–5	Public	746	80.9 Top 10%	81% Math proficiency	746
14	Ashland Elementary Manassas · Elementary · Grades PK–5	Public	738	85.9 Top 5%	93% Math proficiency	738
15	George P. Mullen Elementary Manassas · Elementary · Grades PK–5	Public	667	65.1 Top 50%	72% Math proficiency	667
16	Pennington Traditional Manassas · Elementary · Grades 1–8	Public	651	83.3 Top 10%	94% Math proficiency	651
17	Thurgood Marshall Elementary Manassas · Elementary · Grades PK–5	Public	642	84.5 Top 10%	93% Math proficiency	642
18	C.A. Sinclair Elementary Manassas · Elementary · Grades PK–5	Public	636	70.9 Top 25%	85% Math proficiency	636
19	Baldwin Elementary Manassas · Elementary · Grades PK–4	Public	631	55.8 Top 50%	70% Math proficiency	631
20	Sudley Elementary Manassas · Elementary · Grades PK–5	Public	623	65.1 Top 50%	77% Math proficiency	623
21	Jennie Dean Elementary Manassas · Elementary · Grades PK–4	Public	579	48.8 Lower 50%	62% Math proficiency	579
22	Innovation Elementary Manassas · Elementary · Grades PK–5	Public	565	45.5 Lower 50%	70.8% Free/reduced-price lunch	565
23	Weems Elementary Manassas · Elementary · Grades PK–4	Public	556	59.7 Top 50%	79% Math proficiency	556
24	Richard C. Haydon Elementary Manassas · Elementary · Grades PK–4	Public	556	58.6 Top 50%	68% Math proficiency	556
25	George Carr Round Elementary Manassas · Elementary · Grades PK–4	Public	512	56.6 Top 50%	79% Math proficiency	512
26	West Gate Elementary Manassas · Elementary · Grades PK–5	Public	482	67.0 Top 50%	79% Math proficiency	482
27	Loch Lomond Elementary Manassas · Elementary · Grades PK–5	Public	480	75.5 Top 25%	91% Math proficiency	480
28	Coles Elementary Manassas · Elementary · Grades PK–5	Public	431	73.3 Top 25%	92% Math proficiency	431
29	Suella G. Ellis Elementary Manassas · Elementary · Grades PK–5	Public	403	58.3 Top 50%	64% Math proficiency	403
30	Baldwin Intermediate Manassas · Middle · Grades 5–6	Public	260	63.5 Top 50%	75% Math proficiency	260

Charles J. Colgan Sr. High in Manassas leads the 2025 list of largest schools in Manassas with Enrollment 2,956. Of the 30 schools shown, 30 are public.

For the full picture see the wider Virginia largest schools rankings, every school on the Manassas 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 Manassas?

Charles J. Colgan Sr. High in Manassas, Virginia ranks first among largest schools in Manassas with Enrollment 2,956 (Enrollment: 2,956).

How are largest schools in Manassas 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.