Largest Schools in St. Vrain Valley School District No. Re1J (2025)

Schools with the highest enrollment. Ranked by the Success Index (US) from official American data; 49 schools in St. Vrain Valley School District No. Re1J, Colorado. Rank positions shown on each profile are within United States and Colorado.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Erie High School Erie · High · Grades 9–12	Public	1,727	70.1 Top 25%	54% Math proficiency	1,727
2	Niwot High School Niwot · High · Grades 9–12	Public	1,509	65.7 Top 50%	56% Math proficiency	1,509
3	Frederick Senior High School Frederick · High · Grades 9–12	Public	1,491	40.3 Lower 50%	24% Math proficiency	1,491
4	Longmont High School Longmont · High · Grades 9–12	Public	1,268	44.7 Lower 50%	36% Math proficiency	1,268
5	Soaring Heights PK-8 Erie · Elementary · Grades PK–8	Public	1,211	60.5 Top 50%	47% Math proficiency	1,211
6	Silver Creek High School Longmont · High · Grades 9–12	Public	1,208	67.2 Top 25%	51% Math proficiency	1,208
7	Mead High School Longmont · High · Grades 9–12	Public	1,174	58.7 Top 50%	44% Math proficiency	1,174
8	Skyline High School Longmont · High · Grades 9–12	Public	1,082	28.6 Lower 50%	25% Math proficiency	1,082
9	Thunder Valley PK-8 Frederick · Elementary · Grades PK–8	Public	880	21.7 Lower 50%	17% Math proficiency	880
10	Mead Elementary School Mead · Elementary · Grades PK–5	Public	879	62.4 Top 50%	53% Math proficiency	879
11	Erie Middle School Erie · Middle · Grades 6–8	Public	762	60.9 Top 50%	46% Math proficiency	762
12	Timberline PK-8 Longmont · Elementary · Grades PK–8	Public	762	18.1 Lower 50%	12% Math proficiency	762
13	Coal Ridge Middle School Firestone · Middle · Grades 6–8	Public	727	38.6 Lower 50%	32% Math proficiency	727
14	Flagstaff Charter Academy Longmont · Elementary · Grades PK–8	Charter	725	71.5 Top 25%	49% Math proficiency	725
15	Altona Middle School Longmont · Middle · Grades 6–8	Public	715	74.9 Top 25%	60% Math proficiency	715
16	Westview Middle School Longmont · Middle · Grades 6–8	Public	621	62.7 Top 50%	48% Math proficiency	621
17	Firestone Charter Academy Firestone · Elementary · Grades PK–8	Charter	600	57.5 Top 50%	35% Math proficiency	600
18	Black Rock Elementary Erie · Elementary · Grades PK–5	Public	597	66.1 Top 50%	60% Math proficiency	597
19	Red Hawk Elementary Erie · Elementary · Grades PK–5	Public	588	65.9 Top 50%	53% Math proficiency	588
20	Aspen Ridge Preparatory School Erie · Elementary · Grades K–8	Charter	581	49.3 Lower 50%	35% Math proficiency	581
21	Mead Middle School Mead · Middle · Grades 6–8	Public	571	67.0 Top 50%	50% Math proficiency	571
22	Blue Mountain Elementary Longmont · Elementary · Grades PK–5	Public	542	76.8 Top 25%	69% Math proficiency	542
23	Highlands Elementary School Erie · Elementary · Grades PK–5	Public	528	67.3 Top 50%	15.3% Free/reduced-price lunch	528
24	Centennial Elementary Firestone · Elementary · Grades PK–5	Public	525	47.7 Lower 50%	41% Math proficiency	525
25	Fall River Elementary School Longmont · Elementary · Grades PK–5	Public	520	58.1 Top 50%	47% Math proficiency	520
26	Erie Elementary School Erie · Elementary · Grades PK–5	Public	486	68.3 Top 25%	57% Math proficiency	486
27	Grand View Elementary Frederick · Elementary · Grades PK–5	Public	446	52.2 Top 50%	42% Math proficiency	446
28	Trail Ridge Middle School Longmont · Middle · Grades 6–8	Public	435	28.1 Lower 50%	23% Math proficiency	435
29	Legacy Elementary School Frederick · Elementary · Grades PK–5	Public	430	46.1 Lower 50%	39% Math proficiency	430
30	Eagle Crest Elementary School Longmont · Elementary · Grades PK–5	Public	421	55.2 Top 50%	44% Math proficiency	421
31	Niwot Elementary School Niwot · Elementary · Grades PK–5	Public	411	77.8 Top 25%	62% Math proficiency	411
32	Alpine Elementary School Longmont · Elementary · Grades PK–5	Public	388	35.6 Lower 50%	32% Math proficiency	388
33	Prairie Ridge Elementary School Firestone · Elementary · Grades PK–5	Public	387	49.4 Lower 50%	40% Math proficiency	387
34	Longs Peak Middle School Longmont · Middle · Grades 5–8	Public	381	27.7 Lower 50%	19% Math proficiency	381
35	Longmont Estates Elementary School Longmont · Elementary · Grades PK–5	Public	365	47.4 Lower 50%	42% Math proficiency	365
36	Lyons Middle/Senior High School Lyons · High · Grades 6–12	Public	344	73.5 Top 25%	53% Math proficiency	344
37	Central Elementary School Longmont · Elementary · Grades PK–5	Public	344	59.3 Top 50%	47% Math proficiency	344
38	Mountain View Elementary School Longmont · Elementary · Grades PK–4	Public	321	23.9 Lower 50%	17% Math proficiency	321
39	Burlington Elementary School Longmont · Elementary · Grades PK–5	Public	320	41.2 Lower 50%	37% Math proficiency	320
40	Northridge Elementary School Longmont · Elementary · Grades PK–5	Public	318	22.1 Lower 50%	17% Math proficiency	318
41	Sunset Middle School Longmont · Middle · Grades 6–8	Public	316	39.2 Lower 50%	26% Math proficiency	316
42	Rocky Mountain Elementary School Longmont · Elementary · Grades PK–5	Public	315	18.1 Lower 50%	12% Math proficiency	315
43	Hygiene Elementary School Longmont · Elementary · Grades PK–5	Public	313	73.6 Top 25%	62% Math proficiency	313
44	St. Vrain Community Montessori School Longmont · Elementary · Grades PK–8	Charter	260	50.4 Top 50%	10% Math proficiency	260
45	Lyons Elementary School Lyons · Elementary · Grades PK–5	Public	255	77.5 Top 25%	62% Math proficiency	255
46	Carbon Valley Academy Frederick · Elementary · Grades PK–8	Charter	245	35.7 Lower 50%	22% Math proficiency	245
47	Columbine Elementary School Longmont · Elementary · Grades PK–5	Public	231	24.9 Lower 50%	22% Math proficiency	231
48	Indian Peaks Elementary School Longmont · Elementary · Grades PK–5	Public	214	33.5 Lower 50%	32% Math proficiency	214
49	Sanborn Elementary School Longmont · Elementary · Grades PK–5	Public	209	29.4 Lower 50%	22% Math proficiency	209

Erie High School in Erie leads the 2025 list of largest schools in St. Vrain Valley School District No. Re1J with Enrollment 1,727. Of the 49 schools shown, 44 are public, 5 are charter.

For the full picture see the wider Colorado largest schools rankings, every school on the St. Vrain Valley School District No. Re1J page, or the comparison tool to put a shortlist side by side.

Free academic assessment

Is your child on grade level in reading and math?

Success Tutoring offers personalised English and math tutoring from Kindergarten to Grade 12. Start with a free online assessment and a clear plan for the year ahead.

Personalised learning plan mapped to the Australian Curriculum
English & Maths from Kindergarten to Year 12
Flexible memberships, no lock-in contracts
Centres across NSW, VIC, QLD, WA, SA and ACT

Frequently asked questions

What is the best largest school in St. Vrain Valley School District No. Re1J?

Erie High School in Erie, Colorado ranks first among largest schools in St. Vrain Valley School District No. Re1J with Enrollment 1,727 (Enrollment: 1,727).

How are largest schools in St. Vrain Valley School District No. Re1J 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.