Top 100 largest schools in Wyoming (2025)

Schools with the highest enrollment. Ordered by the measure shown, with the Success Index (US) for context; 100 schools shown.

#	School	Sector	Enrollment	Success Index (US)	Key result	Students
1	Kelly Walsh High School Casper · High · Grades 9–12	Public	2,002	59.4 Top 50%	47% Math proficiency	2,002
2	Natrona County High School Casper · High · Grades 9–12	Public	1,703	58.0 Top 50%	45% Math proficiency	1,703
3	East High School Cheyenne · High · Grades 9–12	Public	1,566	54.7 Top 50%	39% Math proficiency	1,566
4	Rock Springs High School Rock Springs · High · Grades 9–12	Public	1,393	46.7 Lower 50%	40% Math proficiency	1,393
5	Central High School Cheyenne · High · Grades 9–12	Public	1,270	70.4 Top 25%	49% Math proficiency	1,270
6	Campbell County High School Gillette · High · Grades 9–12	Public	1,212	44.8 Lower 50%	36% Math proficiency	1,212
7	Thunder Basin High School Gillette · High · Grades 9–12	Public	1,206	53.9 Top 50%	47% Math proficiency	1,206
8	South High School Cheyenne · High · Grades 9–12	Public	1,112	29.9 Lower 50%	25% Math proficiency	1,112
9	Laramie High School Laramie · High · Grades 9–12	Public	1,070	69.3 Top 25%	61% Math proficiency	1,070
10	Sheridan High School Sheridan · High · Grades 9–12	Public	1,001	77.5 Top 10%	71% Math proficiency	1,001
11	Jackson Hole High School Jackson · High · Grades 9–12	Public	861	65.9 Top 50%	47% Math proficiency	861
12	Star Valley High School Afton · High · Grades 9–12	Public	846	62.2 Top 50%	38% Math proficiency	846
13	Carey Junior High School Cheyenne · Middle · Grades 7–8	Public	800	61.6 Top 50%	49% Math proficiency	800
14	Evanston High School Evanston · High · Grades 9–12	Public	771	48.2 Lower 50%	41% Math proficiency	771
15	C Y Middle School Casper · Middle · Grades 6–8	Public	766	71.7 Top 25%	56% Math proficiency	766
16	Sheridan Junior High School Sheridan · Middle · Grades 6–8	Public	766	83.3 Top 10%	69% Math proficiency	766
17	Green River High School Green River · High · Grades 9–12	Public	757	52.8 Top 50%	37% Math proficiency	757
18	Centennial Middle School Casper · Middle · Grades 6–8	Public	755	65.2 Top 50%	47% Math proficiency	755
19	Rock Springs Junior High Rock Springs · Middle · Grades 7–8	Public	746	60.9 Top 50%	50% Math proficiency	746
20	Laramie Middle School Laramie · Middle · Grades 6–8	Public	735	71.2 Top 25%	60% Math proficiency	735
21	Riverton High School Riverton · High · Grades 9–12	Public	701	43.9 Lower 50%	26% Math proficiency	701
22	Twin Spruce Junior High School Gillette · Middle · Grades 7–8	Public	667	53.5 Top 50%	45% Math proficiency	667
23	Rawlins Elementary Rawlins · Elementary · Grades PK–5	Public	666	53.6 Top 50%	49% Math proficiency	666
24	Jackson Hole Middle School Jackson · Middle · Grades 6–8	Public	664	74.8 Top 25%	51% Math proficiency	664
25	McCormick Junior High School Cheyenne · Middle · Grades 7–8	Public	622	74.2 Top 25%	56% Math proficiency	622
26	Dean Morgan Middle School Casper · Middle · Grades 6–8	Public	613	55.9 Top 50%	47% Math proficiency	613
27	Cody High School Cody · High · Grades 9–12	Public	604	49.5 Top 50%	34% Math proficiency	604
28	Sage Valley Junior High School Gillette · Middle · Grades 7–8	Public	589	73.8 Top 25%	61% Math proficiency	589
29	Johnson Junior High School Cheyenne · Middle · Grades 7–8	Public	574	40.7 Lower 50%	28% Math proficiency	574
30	Upton Elementary Upton · Elementary · Grades K–5	Public	574	20.9 Lower 50%	34.5% Math proficiency	574
31	Powell High School Powell · High · Grades 9–12	Public	573	60.8 Top 50%	45% Math proficiency	573
32	Riverton Middle School Riverton · Middle · Grades 6–8	Public	559	58.1 Top 50%	41% Math proficiency	559
33	Stocktrail Elementary Gillette · Elementary · Grades K–6	Public	554	54.9 Top 50%	42% Math proficiency	554
34	Pilot Butte Elementary Rock Springs · Middle · Grades 4–6	Public	547	59.9 Top 50%	47% Math proficiency	547
35	Eastside Elementary Rock Springs · Middle · Grades 4–6	Public	541	40.7 Lower 50%	38% Math proficiency	541
36	Lander Valley High School Lander · High · Grades 9–12	Public	538	65.0 Top 50%	51% Math proficiency	538
37	Casper Classical Academy Casper · Middle · Grades 6–9	Public	516	64.7 Top 50%	51% Math proficiency	516
38	Douglas High School Douglas · High · Grades 9–12	Public	511	66.0 Top 25%	47% Math proficiency	511
39	Lincoln Middle School Green River · Middle · Grades 6–8	Public	504	78.4 Top 25%	70% Math proficiency	504
40	Cody Middle School Cody · Middle · Grades 6–8	Public	466	78.6 Top 25%	67% Math proficiency	466
41	Mountain View K-8 Mountain View · Elementary · Grades K–8	Public	454	73.6 Top 25%	55% Math proficiency	454
42	Meadowlark Elementary Cheyenne · Middle · Grades 5–6	Public	453	71.8 Top 25%	58% Math proficiency	453
43	Verda James Elementary Casper · Elementary · Grades K–5	Public	448	61.9 Top 50%	53% Math proficiency	448
44	Slade Elementary Laramie · Elementary · Grades PK–5	Public	440	82.3 Top 10%	72% Math proficiency	440
45	Rocky Mountain High School Cowley · High · Grades 9–12	Public	439	49.6 Top 50%	37% Math proficiency	439
46	Summit Elementary School Casper · Elementary · Grades K–5	Public	437	64.4 Top 50%	55% Math proficiency	437
47	Rawlins High School Rawlins · High · Grades 9–12	Public	436	47.1 Lower 50%	35% Math proficiency	436
48	Gannett Peak Elementary Lander · Elementary · Grades K–3	Public	436	70.6 Top 25%	52% Math proficiency	436
49	Lincoln Elementary School Casper · Elementary · Grades PK–5	Public	433	44.0 Lower 50%	52% Math proficiency	433
50	Star Valley Middle School Afton · Middle · Grades 7–8	Public	428	73.3 Top 25%	58% Math proficiency	428
51	Pinedale Elementary Pinedale · Elementary · Grades K–5	Public	424	87.9 Top 5%	80% Math proficiency	424
52	Pioneer Park Elementary Cheyenne · Elementary · Grades PK–6	Public	420	76.4 Top 25%	69% Math proficiency	420
53	Afton Elementary Afton · Elementary · Grades PK–3	Public	419	76.0 Top 25%	67% Math proficiency	419
54	Coyote Ridge Cheyenne · Middle · Grades 5–6	Public	415	70.6 Top 25%	25.3% Free/reduced-price lunch	415
55	Buffalo Ridge Elementary Gillette · Elementary · Grades K–6	Public	413	61.5 Top 50%	51% Math proficiency	413
56	Uinta Meadows Elementary Evanston · Elementary · Grades K–5	Public	408	65.6 Top 50%	61% Math proficiency	408
57	Prairie Wind Elementary Gillette · Elementary · Grades K–6	Public	404	62.7 Top 50%	51% Math proficiency	404
58	Stagecoach Elementary Rock Springs · Elementary · Grades K–3	Public	394	67.0 Top 50%	62% Math proficiency	394
59	Arapahoe Elementary Arapahoe · Elementary · Grades PK–8	Public	392	18.0 Lower 50%	5% Math proficiency	392
60	Douglas Middle School Douglas · Middle · Grades 6–8	Public	389	83.9 Top 10%	69% Math proficiency	389
61	Niobrara County High School Lusk · High · Grades 9–12	Public	387	39.8 Lower 50%	32% Math proficiency	387
62	Powell Middle School Powell · Middle · Grades 6–8	Public	387	82.0 Top 10%	76% Math proficiency	387
63	Lakeview Elementary Gillette · Elementary · Grades K–6	Public	378	49.2 Lower 50%	44% Math proficiency	378
64	Hillcrest Elementary Gillette · Elementary · Grades K–6	Public	370	42.4 Lower 50%	43% Math proficiency	370
65	Paradise Valley Elementary Casper · Elementary · Grades K–5	Public	359	62.5 Top 50%	57% Math proficiency	359
66	Ft. Caspar Academy Casper · Elementary · Grades K–5	Public	356	79.2 Top 25%	70% Math proficiency	356
67	Munger Mountain Elementary School Jackson · Elementary · Grades K–5	Public	355	57.2 Top 50%	46% Math proficiency	355
68	Afflerbach Elementary Cheyenne · Elementary · Grades PK–6	Public	352	42.9 Lower 50%	37% Math proficiency	352
69	Sage Elementary Rock Springs · Elementary · Grades K–3	Public	352	72.9 Top 25%	62% Math proficiency	352
70	Osmond Elementary Afton · Middle · Grades 4–6	Public	349	76.4 Top 25%	69% Math proficiency	349
71	Conestoga Elementary Gillette · Elementary · Grades K–6	Public	348	62.6 Top 50%	48% Math proficiency	348
72	Journey Elementary Casper · Elementary · Grades PK–5	Public	348	36.0 Lower 50%	37% Math proficiency	348
73	Cottonwood Elementary Casper · Elementary · Grades PK–5	Public	347	33.9 Lower 50%	27% Math proficiency	347
74	Thayne Elementary Thayne · Elementary · Grades K–3	Public	344	62.7 Top 50%	47% Math proficiency	344
75	Park Elementary Casper · Elementary · Grades K–5	Public	344	70.8 Top 25%	67% Math proficiency	344
76	Sagewood Elementary Casper · Elementary · Grades PK–5	Public	340	59.2 Top 50%	57% Math proficiency	340
77	Worland High School Worland · High · Grades 9–12	Public	339	68.5 Top 25%	50% Math proficiency	339
78	Baggs Elementary Cheyenne · Elementary · Grades PK–6	Public	336	51.5 Top 50%	47% Math proficiency	336
79	Pronghorn Elementary Gillette · Elementary · Grades K–6	Public	334	86.3 Top 5%	74% Math proficiency	334
80	Saddle Ridge Elementary Cheyenne · Elementary · Grades K–6	Public	333	72.4 Top 25%	57% Math proficiency	333
81	Arp Elementary Cheyenne · Elementary · Grades PK–6	Public	332	27.3 Lower 50%	12% Math proficiency	332
82	Canyon Elementary School Kemmerer · Elementary · Grades K–6	Public	331	75.6 Top 25%	72% Math proficiency	331
83	Sagebrush Elementary Sheridan · Elementary · Grades K–5	Public	330	84.6 Top 10%	92% Math proficiency	330
84	Torrington High School Torrington · High · Grades 9–12	Public	328	49.2 Lower 50%	42% Math proficiency	328
85	Henry A. Coffeen Elementary Sheridan · Elementary · Grades K–5	Public	325	64.1 Top 50%	62% Math proficiency	325
86	Evanston Middle School Evanston · Middle · Grades 6–8	Public	324	72.5 Top 25%	59% Math proficiency	324
87	Lander Middle School Lander · Middle · Grades 6–8	Public	324	75.6 Top 25%	57% Math proficiency	324
88	Rendezvous Elementary Riverton · Elementary · Grades 3–5	Public	324	63.9 Top 50%	57% Math proficiency	324
89	Freedom Elementary Cheyenne · Elementary · Grades K–6	Public	323	71.7 Top 25%	57% Math proficiency	323
90	Rocky Mountain Elementary Cowley · Elementary · Grades PK–5	Public	322	58.2 Top 50%	52% Math proficiency	322
91	Southridge Elementary Casper · Elementary · Grades K–5	Public	322	48.5 Lower 50%	32% Math proficiency	322
92	Highland Park Elementary Sheridan · Elementary · Grades PK–5	Public	321	86.7 Top 5%	82% Math proficiency	321
93	Jackson Elementary Jackson · Elementary · Grades PK–5	Public	319	62.2 Top 50%	42% Math proficiency	319
94	Moorcroft Elementary Moorcroft · Elementary · Grades K–6	Public	318	65.3 Top 50%	55% Math proficiency	318
95	Colter Elementary Jackson · Elementary · Grades K–5	Public	318	85.7 Top 5%	72% Math proficiency	318
96	Buffalo High School Buffalo · High · Grades 9–12	Public	317	67.4 Top 25%	47% Math proficiency	317
97	Pinedale High School Pinedale · High · Grades 9–12	Public	316	72.8 Top 25%	57% Math proficiency	316
98	Meadowlark Elementary Sheridan · Elementary · Grades K–5	Public	316	81.9 Top 10%	77% Math proficiency	316
99	Sunrise Elementary Cheyenne · Elementary · Grades K–6	Public	315	42.8 Lower 50%	39% Math proficiency	315
100	Sunflower Elementary Gillette · Elementary · Grades K–6	Public	311	60.0 Top 50%	57% Math proficiency	311

Kelly Walsh High School in Casper leads the 2025 list of largest schools in Wyoming with Enrollment 2,002. Of the 100 schools shown, 100 are public.

Use the rankings to build a shortlist, then visit the schools and ask how they support students at your child's level.

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Frequently asked questions

What is the best largest school in Wyoming?

Kelly Walsh High School in Casper ranks first among largest schools in Wyoming with Enrollment 2,002 (Enrollment: 2,002).

How are largest schools in Wyoming 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.