Largest Schools in Douglas County School District No. Re 1 (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 82 schools in Douglas County School District No. Re 1, Colorado. Rank positions shown on each profile are within United States and Colorado.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	American Academy Castle Pines · Elementary · Grades PK–8	Charter	2,803	71.0 Top 25%	58% Math proficiency	2,803
2	Rock Canyon High School Highlands Ranch · High · Grades 9–12	Public	2,325	79.3 Top 10%	72% Math proficiency	2,325
3	Legend High School Parker · High · Grades 9–12	Public	2,206	70.3 Top 25%	51% Math proficiency	2,206
4	Mountain Vista High School Highlands Ranch · High · Grades 9–12	Public	2,169	74.4 Top 25%	64% Math proficiency	2,169
5	Chaparral High School Parker · High · Grades 9–12	Public	2,007	71.1 Top 25%	57% Math proficiency	2,007
6	Castle View High School Castle Rock · High · Grades 9–12	Public	1,938	65.1 Top 50%	45% Math proficiency	1,938
7	Thunderridge High School Highlands Ranch · High · Grades 9–12	Public	1,820	75.8 Top 25%	66% Math proficiency	1,820
8	Douglas County High School Castle Rock · High · Grades 9–12	Public	1,659	67.9 Top 25%	51% Math proficiency	1,659
9	Ponderosa High School Parker · High · Grades 9–12	Public	1,406	66.4 Top 25%	48% Math proficiency	1,406
10	Leman Classical Academy Parker · Elementary · Grades K–8	Charter	1,390	56.3 Top 50%	48% Math proficiency	1,390
11	Highlands Ranch High School Highlands Ranch · High · Grades 9–12	Public	1,323	71.1 Top 25%	60% Math proficiency	1,323
12	Hope Online Learning Academy Co-Op Englewood · High · Grades 6–12	Charter	1,307	9.6 Lower 50%	2.5% Math proficiency	1,307
13	Rocky Heights Middle School Littleton · Middle · Grades 6–8	Public	1,129	70.8 Top 25%	55% Math proficiency	1,129
14	Cimarron Middle Parker · Middle · Grades 6–8	Public	1,052	55.4 Top 50%	44% Math proficiency	1,052
15	Aspen View Academy Castle Rock · Elementary · Grades PK–8	Charter	1,018	57.7 Top 50%	40% Math proficiency	1,018
16	Ben Franklin Academy Highlands Ranch · Elementary · Grades PK–8	Charter	956	74.6 Top 25%	60% Math proficiency	956
17	Mesa Middle School Castle Rock · Middle · Grades 6–8	Public	852	61.8 Top 50%	41% Math proficiency	852
18	Ranch View Middle School Highlands Ranch · Middle · Grades 7–8	Public	829	71.6 Top 25%	53% Math proficiency	829
19	Sagewood Middle School Parker · Middle · Grades 6–8	Public	816	56.7 Top 50%	33% Math proficiency	816
20	Sierra Middle School Parker · Middle · Grades 7–8	Public	805	46.5 Lower 50%	37% Math proficiency	805
21	World Compass Academy Castle Rock · Elementary · Grades PK–8	Charter	791	49.5 Lower 50%	36% Math proficiency	791
22	Mountain Ridge Middle School Highlands Ranch · Middle · Grades 7–8	Public	752	67.0 Top 50%	47% Math proficiency	752
23	Pine Lane Elementary Parker · Elementary · Grades PK–6	Public	744	47.4 Lower 50%	33% Math proficiency	744
24	Parker Core Knowledge Parker · Elementary · Grades K–8	Charter	705	88.6 Top 5%	83% Math proficiency	705
25	North Star Academy Parker · Elementary · Grades K–8	Charter	684	70.7 Top 25%	54% Math proficiency	684
26	Castle Rock Middle School Castle Rock · Middle · Grades 7–8	Public	660	48.5 Lower 50%	33% Math proficiency	660
27	Gold Rush Elementary Parker · Elementary · Grades PK–5	Public	639	73.1 Top 25%	64% Math proficiency	639
28	Parker Performing Arts Englewood · Elementary · Grades K–8	Charter	638	47.1 Lower 50%	31% Math proficiency	638
29	Clear Sky Elementary Castle Rock · Elementary · Grades PK–6	Public	627	55.3 Top 50%	35% Math proficiency	627
30	Prairie Crossing Elementary School Parker · Elementary · Grades PK–6	Public	612	58.9 Top 50%	41% Math proficiency	612
31	Mammoth Heights Elementary Parker · Elementary · Grades PK–6	Public	598	51.0 Top 50%	36% Math proficiency	598
32	Academy Charter School Castle Rock · Elementary · Grades PK–8	Charter	581	72.0 Top 25%	53% Math proficiency	581
33	Eagle Ridge Elementary School Lone Tree · Elementary · Grades PK–6	Public	571	65.2 Top 50%	50% Math proficiency	571
34	Northridge Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	560	78.0 Top 25%	65% Math proficiency	560
35	Cresthill Middle School Highlands Ranch · Middle · Grades 7–8	Public	558	67.6 Top 25%	52% Math proficiency	558
36	Cherokee Trail Elementary School Parker · Elementary · Grades PK–6	Public	553	58.3 Top 50%	44% Math proficiency	553
37	Sage Canyon Elementary Castle Rock · Elementary · Grades PK–6	Public	552	49.9 Lower 50%	33% Math proficiency	552
38	Challenge to Excellence Charter School Parker · Elementary · Grades K–8	Charter	551	76.5 Top 25%	68% Math proficiency	551
39	DC Montessori Charter School Castle Rock · Elementary · Grades PK–8	Charter	547	55.9 Top 50%	39% Math proficiency	547
40	Buffalo Ridge Elementary School Castle Rock · Elementary · Grades PK–5	Public	524	76.6 Top 25%	64% Math proficiency	524
41	Meadow View Elementary School Castle Rock · Elementary · Grades PK–6	Public	508	54.1 Top 50%	41% Math proficiency	508
42	Coyote Creek Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	506	76.6 Top 25%	63% Math proficiency	506
43	Legacy Point Elementary School Parker · Elementary · Grades PK–5	Public	499	50.6 Top 50%	32% Math proficiency	499
44	Flagstone Elementary School Castle Rock · Elementary · Grades PK–6	Public	496	51.6 Top 50%	41% Math proficiency	496
45	Pine Grove Elementary School Parker · Elementary · Grades PK–6	Public	480	67.1 Top 50%	44% Math proficiency	480
46	Platte River Charter Academy Highlands Ranch · Elementary · Grades PK–8	Charter	475	83.5 Top 10%	66% Math proficiency	475
47	Stone Mountain Elementary Highlands Ranch · Elementary · Grades PK–6	Public	452	81.2 Top 10%	69% Math proficiency	452
48	Global Village Academy - Douglas County Parker · Elementary · Grades K–6	Charter	450	50.4 Top 50%	22% Math proficiency	450
49	Pioneer Elementary School Parker · Elementary · Grades PK–5	Public	449	57.7 Top 50%	41% Math proficiency	449
50	Rock Ridge Elementary School Castle Rock · Elementary · Grades PK–6	Public	449	41.8 Lower 50%	31% Math proficiency	449
51	Renaissance Secondary School Castle Rock · High · Grades 6–12	Charter	441	38.7 Lower 50%	12% Math proficiency	441
52	Castle Rock Elementary School Castle Rock · Elementary · Grades PK–6	Public	440	43.4 Lower 50%	30% Math proficiency	440
53	Fox Creek Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	436	68.6 Top 25%	53% Math proficiency	436
54	Soaring Hawk Elementary School Castle Rock · Elementary · Grades PK–6	Public	431	54.6 Top 50%	33% Math proficiency	431
55	Iron Horse Elementary School Parker · Elementary · Grades PK–5	Public	430	61.7 Top 50%	47% Math proficiency	430
56	Roxborough Intermediate Littleton · Elementary · Grades 3–6	Public	430	53.3 Top 50%	40% Math proficiency	430
57	Wildcat Mountain Elementary School Littleton · Elementary · Grades PK–5	Public	423	79.8 Top 25%	68% Math proficiency	423
58	Redstone Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	398	83.5 Top 10%	70% Math proficiency	398
59	Lone Tree Elementary Lone Tree · Elementary · Grades PK–6	Public	392	75.2 Top 25%	57% Math proficiency	392
60	Cougar Run Elementary School Highlands Ranch · Elementary · Grades K–6	Public	392	70.2 Top 25%	55% Math proficiency	392
61	Arrowwood Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	390	55.9 Top 50%	42% Math proficiency	390
62	Timber Trail Elementary School Castle Rock · Elementary · Grades PK–5	Public	380	76.0 Top 25%	57% Math proficiency	380
63	Heritage Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	377	76.6 Top 25%	56% Math proficiency	377
64	Eldorado Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	377	76.5 Top 25%	55% Math proficiency	377
65	South Ridge Elementary An IB World School Castle Rock · Elementary · Grades K–5	Public	371	31.9 Lower 50%	21% Math proficiency	371
66	Frontier Valley Elementary School Parker · Elementary · Grades PK–5	Public	369	53.8 Top 50%	37% Math proficiency	369
67	Bear Canyon Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	368	72.0 Top 25%	54% Math proficiency	368
68	Roxborough Elementary School Littleton · Elementary · Grades PK–2	Public	368	68.2 Top 25%	13.9% Free/reduced-price lunch	368
69	Renaissance Expedition Learn Outward Bound School Castle Rock · Elementary · Grades K–6	Public	361	68.5 Top 25%	55% Math proficiency	361
70	Saddle Ranch Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	355	70.8 Top 25%	56% Math proficiency	355
71	Franktown Elementary School Franktown · Elementary · Grades PK–5	Public	354	64.8 Top 50%	57% Math proficiency	354
72	Summit View Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	350	77.6 Top 25%	59% Math proficiency	350
73	Acres Green Elementary School Littleton · Elementary · Grades PK–6	Public	341	51.7 Top 50%	38% Math proficiency	341
74	Trailblazer Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	330	61.7 Top 50%	43% Math proficiency	330
75	Northeast Elementary School Parker · Elementary · Grades 3–5	Public	329	46.5 Lower 50%	29% Math proficiency	329
76	Mountain View Elementary School Parker · Elementary · Grades PK–2	Public	324	66.0 Top 50%	16.4% Free/reduced-price lunch	324
77	Sand Creek Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	322	65.6 Top 50%	52% Math proficiency	322
78	Copper Mesa Elementary School Highlands Ranch · Elementary · Grades PK–6	Public	306	62.3 Top 50%	43% Math proficiency	306
79	Sedalia Elementary School Sedalia · Elementary · Grades PK–6	Public	212	36.2 Lower 50%	22% Math proficiency	212
80	Larkspur Elementary School Larkspur · Elementary · Grades K–6	Public	161	54.1 Top 50%	42% Math proficiency	161
81	Venture Academy of Leadership and Entrepreneurship Parker · High · Grades 9–12	Public	88	83.4 Top 5%	10.2% Free/reduced-price lunch	88
82	eDCSD Englewood · High · Grades 9–12	Public	61	84.3 Top 5%	6.6% Free/reduced-price lunch	61

American Academy in Castle Pines leads the 2025 list of largest schools in Douglas County School District No. Re 1 with Enrollment 2,803. Of the 82 schools shown, 67 are public, 15 are charter.

For the full picture see the wider Colorado largest schools rankings, every school on the Douglas County School District No. Re 1 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 Douglas County School District No. Re 1?

American Academy in Castle Pines, Colorado ranks first among largest schools in Douglas County School District No. Re 1 with Enrollment 2,803 (Enrollment: 2,803).

How are largest schools in Douglas County School District No. Re 1 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.