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Best Middle Schools in Boulder County, CO

New rankings! SchoolDigger recently updated its Colorado rankings with newly released test scores for the 2025-26 school year.

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At a glance

Schools

6,834

Students

Districts

5-star schools

Top rankedSummit Middle Charter School8^th of 469 Colorado middle schools

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Biggest riser

Casey Middle School up 70 spots statewide this year

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Smallest classes

Longs Peak Middle School 12.4 students per teacher

SchoolDigger ratings

5★

4★

3★

See the top-ranked Colorado schools →

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Ranking:

E Elementary M Middle H High A Alternative P Private

Choose columns to see: Summary School Students/Teachers Ranking Test Scores Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CMAS English Language Arts (2026)					CMAS Math (2026)					CMAS Science (2026)		Per Pupil Expenditures (2025)
Name	Type	Grades	Address	City	Zip	County	District	Is Charter	Is Magnet	Is Virtual	Is Title I	Phone	Enrollment	Full-time Teachers	Student/ Teacher Ratio	Free/Discounted Lunch Recipients (2025)	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2026)	Statewide Rank (2026)	State Percentile (2026)	SchoolDigger Rating (2026)	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	Rank Change from Previous Year	CMAS English Language Arts 5th Grade	CMAS English Language Arts 6th Grade	CMAS English Language Arts 7th Grade	CMAS English Language Arts 8th Grade	CMAS English Language Arts All Grades	CMAS Math 5th Grade	CMAS Math 6th Grade	CMAS Math 7th Grade	CMAS Math 8th Grade	CMAS Math All Grades	CMAS Science 5th Grade	CMAS Science 8th Grade	Total
Manhattan Middle School of the Arts and Academics	Public	6-8	290 Manhattan Drive	Boulder	80303	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-6300	482	29	16.8	31.1%	287 (59.5%)	6 (1.2%)	123 (25.5%)	15 (3.1%)	2 (0.4%)	0 (0.0%)	48 (10.0%)	89.7	37^th of 469 public middle schools	92.1%		86.6	49^th of 469 public middle schools	89.6%	12		74.5	70.2	74.7	72.8		50.0	54.5	66.3	56.0		71.3	$22,038
Casey Middle School	Public	6-8	1301 High Street	Boulder	80304	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-2700	363	29	12.6	65.0%	138 (38.0%)	3 (0.8%)	199 (54.8%)	8 (2.2%)	0 (0.0%)	1 (0.3%)	14 (3.9%)	43.4	221^st of 469 public middle schools	52.9%		33.1	291^st of 469 public middle schools	38.0%	70				41.7	30.4				34.2	22.2		29.6	$23,458
Centennial Middle School	Public	6-8	2205 Norwood Avenue	Boulder	80304	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-5441	598	31	19.3	33.1%	379 (63.4%)	7 (1.2%)	172 (28.8%)	11 (1.8%)	1 (0.2%)	0 (0.0%)	26 (4.3%)	79.6	85^th of 469 public middle schools	81.9%		78.4	85^th of 469 public middle schools	81.9%			60.7	51.9	69.6	60.6		43.3	45.2	63.8	50.8		62.2	$18,969
Angevine Middle School	Public	6-8	1150 W South Boulder Road	Lafayette	80026	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-7100	619	40	15.3	49.6%	311 (50.2%)	9 (1.5%)	245 (39.6%)	15 (2.4%)	1 (0.2%)	1 (0.2%)	35 (5.7%)	59.9	160^th of 469 public middle schools	65.9%		57.4	169^th of 469 public middle schools	64.0%	9		44.2	47.0	52.1	47.6		37.2	37.3	45.5	39.8		42.9	$22,139
Louisville Middle School	Public	6-8	1341 Main Street	Louisville	80027	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-7400	626	34	18.6	18.5%	497 (79.4%)	3 (0.5%)	66 (10.5%)	14 (2.2%)	1 (0.2%)	0 (0.0%)	43 (6.9%)	88.3	42^nd of 469 public middle schools	91.0%		86.4	50^th of 469 public middle schools	89.3%	8		70.7	60.8	63.9	65.2		63.5	53.3	64.6	60.5		65.0	$19,258
Nevin Platt Middle School	Public	6-8	6096 Baseline Road	Boulder	80303	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-5536	483	29	16.8	14.7%	389 (80.5%)	4 (0.8%)	47 (9.7%)	4 (0.8%)	1 (0.2%)	0 (0.0%)	36 (7.5%)	84.2	59^th of 469 public middle schools	87.4%		80.9	71^st of 469 public middle schools	84.9%	12		57.2	68.9	69.7	64.9		45.3	50.9	64.1	53.4		61.5	$21,532
Southern Hills Middle School	Public	6-8	1500 Knox Drive	Boulder	80305	Boulder County	Boulder Valley School District No. Re2	No	No	No	No	(720) 561-3400	502	26	19.3	10.6%	365 (72.7%)	7 (1.4%)	40 (8.0%)	35 (7.0%)	1 (0.2%)	0 (0.0%)	54 (10.8%)	96.3	14^th of 469 public middle schools	97.0%		97.5	10^th of 469 public middle schools	97.9%	4		74.2	81.1	79.7	78.1		65.8	75.5	75.2	71.7		73.8	$20,421
Summit Middle Charter School	Public, Charter	6-8	4655 Hanover Avenue	Boulder	80305	Boulder County	Boulder Valley School District No. Re2	Yes	No	No	No	(720) 561-3900	366	22	16.8	13.4%	233 (63.7%)	3 (0.8%)	40 (10.9%)	43 (11.7%)	2 (0.5%)	0 (0.0%)	45 (12.3%)	98.4	8^th of 469 public middle schools	98.3%		98.9	5^th of 469 public middle schools	98.9%	3		82.6	85.8	80.7	83.0		84.3	91.2	82.5	85.9		78.6	$13,229
Erie Middle School	Public	6-8	650 Main Street	Erie	80516	Boulder County	St. Vrain Valley School District No. Re1J	No	No	No	No	(303) 828-3391	762	38	20.1	15.5%	562 (73.8%)	10 (1.3%)	114 (15.0%)	41 (5.4%)	1 (0.1%)	0 (0.0%)	34 (4.5%)	77.2	99^th of 469 public middle schools	78.9%		81.8	69^th of 469 public middle schools	85.3%	30		53.6	61.6	46.4	54.1		47.8	61.9	56.2	55.2		51.4	$16,539
Sunset Middle School	Public	6-8	1300 S. Sunset	Longmont	80501	Boulder County	St. Vrain Valley School District No. Re1J	No	No	No	No	(303) 776-3963	316	25	12.5	58.5%	126 (39.9%)	0 (0.0%)	173 (54.7%)	5 (1.6%)	2 (0.6%)	0 (0.0%)	10 (3.2%)	34.7	276^th of 469 public middle schools	41.2%		40.5	238^th of 469 public middle schools	49.3%	38		37.6	31.6	28.8	33.2		31.8	23.5	30.6	28.5		27.6	$22,643
Longs Peak Middle School	Public	5-8	1500 14th Avenue	Longmont	80501	Boulder County	St. Vrain Valley School District No. Re1J	No	No	No	Yes	(303) 776-5611	381	31	12.4	80.3%	93 (24.4%)	4 (1.0%)	275 (72.2%)	2 (0.5%)	1 (0.3%)	0 (0.0%)	6 (1.6%)	13.7	424^th of 469 public middle schools	9.6%		17.3	391^st of 469 public middle schools	16.6%	33	26.2	14.1	26.5	18.1	20.6	8.1	10.6	16.7	16.7	13.4	15.0	12.5	$21,869
Altona Middle School	Public	6-8	4600 Clover Basin Drive	Longmont	80503	Boulder County	St. Vrain Valley School District No. Re1J	No	No	No	No	(720) 494-3980	715	39	18.5	23.5%	496 (69.4%)	5 (0.7%)	107 (15.0%)	71 (9.9%)	0 (0.0%)	0 (0.0%)	36 (5.0%)	94.2	21^st of 469 public middle schools	95.5%		92.5	26^th of 469 public middle schools	94.5%	5		73.2	78.7	72.3	74.9		62.5	68.1	73.7	67.7		62.9	$17,863
Westview Middle School	Public	6-8	1651 Airport Road	Longmont	80503	Boulder County	St. Vrain Valley School District No. Re1J	No	No	No	No	(303) 772-3134	621	34	18.4	36.1%	439 (70.7%)	6 (1.0%)	145 (23.3%)	8 (1.3%)	3 (0.5%)	0 (0.0%)	20 (3.2%)	80	79^th of 469 public middle schools	83.2%		73.5	107^th of 469 public middle schools	77.2%	28		52.2	68.9	60.4	60.3		47.0	49.7	60.5	51.3		55.5	$17,752

SchoolDigger rankings lists for Colorado:

Elementary Schools Middle Schools High Schools Districts Cities

SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Colorado Department of Education.

IMPORTANT DISCLAIMERS: Not all boundaries are included. We make every effort to ensure that boundaries are up-to-date. But it's important to note that these are approximations and are for general informational purposes only. To verify legal descriptions of boundaries or school locations, contact your local tax assessor's office and/or school district.