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Schools in Zip Code 91765

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At a glance

Schools

8,869

Students

Districts

5-star schools

Top rankedChaparral Middle61^st of 2,740 California middle schools

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Biggest riser

Pantera Elementary up 108 spots statewide this year

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Smallest classes

Mt Calvary Lutheran School 16 students per teacher

SchoolDigger ratings

5★

4★

3★

2★

8 schools without a SchoolDigger rating (private or too few tested students)

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Summary:

ZIP code 91765 has 10 schools: seven elementary, two middle and one high school. Six are in Walnut Valley Unified and four in Pomona Unified. In 2025–2026, the average across the schools was 69% proficient in English language arts (ELA), 63% in math and 55% in science, compared with California averages of 49%, 38% and 36%. These are unweighted all-grades school averages, and schools serve different grade spans. The most important takeaway is that averages above the state conceal a wide divide between schools, especially in math, where results spanned 55 percentage points.

Pantera Elementary led ELA at 82%, 15 percentage points above the other nine schools’ average. Chaparral Middle led math at 81%, 20 points above the other schools’ average, and was also second in ELA at 81%. Quail Summit Elementary led science at 76%, 22 points above the other schools’ average. At the lower end, Armstrong Elementary had the lowest ELA and math results, 45% and 26%; its math result was 41 points below the other schools’ average. Lorbeer Middle had the lowest science result at 33%, 25 points below the other schools’ average.

Average results changed little overall: from 2024–2025 to 2025–2026, school-group ELA fell about 1 point, math was nearly unchanged, and science rose about 2 points. Individual schools differed: Armstrong gained 13 points in science, while Maple Hill Elementary fell 11 points. Pantera stands out within its district: SchoolDigger gives it a five-star rating and a 96th-percentile school ranking, compared with Pomona Unified’s two stars and 30th-percentile district ranking. The reported free/reduced lunch-eligible shares for 2024–2025 also varied: 48% at Pantera and 67% at Armstrong. Ratios offer another point of comparison, but do not line up neatly with results: Chaparral had 28.2 students per teacher and led math, while Armstrong had 18.5 and ranked lowest in ELA and math.

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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 Vaccination Finance All

School													Students/Teachers											Ranking (2026)				Ranking (2025)				CSA Spanish Overall (2026)			CSA Spanish Listening (2026)			CSA Spanish Writing (2026)			CSA Spanish Reading (2026)			CAST Science (2026)				Smarter Balanced Assessments English Language Arts/Literacy (2026)								Smarter Balanced Assessments Mathematics (2026)								Vaccination (2024-25)		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/reduced lunch (2024-25)	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	CSA Spanish Overall 7th Grade	CSA Spanish Overall 8th Grade	CSA Spanish Overall All Grades	CSA Spanish Listening 7th Grade	CSA Spanish Listening 8th Grade	CSA Spanish Listening All Grades	CSA Spanish Writing 7th Grade	CSA Spanish Writing 8th Grade	CSA Spanish Writing All Grades	CSA Spanish Reading 7th Grade	CSA Spanish Reading 8th Grade	CSA Spanish Reading All Grades	CAST Science 5th Grade	CAST Science 8th Grade	CAST Science 12th Grade	CAST Science All Grades	Smarter Balanced Assessments English Language Arts/Literacy 3rd Grade	Smarter Balanced Assessments English Language Arts/Literacy 4th Grade	Smarter Balanced Assessments English Language Arts/Literacy 5th Grade	Smarter Balanced Assessments English Language Arts/Literacy 6th Grade	Smarter Balanced Assessments English Language Arts/Literacy 7th Grade	Smarter Balanced Assessments English Language Arts/Literacy 8th Grade	Smarter Balanced Assessments English Language Arts/Literacy 11th Grade	Smarter Balanced Assessments English Language Arts/Literacy All Grades	Smarter Balanced Assessments Mathematics 3rd Grade	Smarter Balanced Assessments Mathematics 4th Grade	Smarter Balanced Assessments Mathematics 5th Grade	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics 11th Grade	Smarter Balanced Assessments Mathematics All Grades	Vaccination: Kindergartners with all required immunizations	Vaccination: Exemption rate	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
Armstrong Elementary	Public	K-6	22750 Beaverhead Dr.	Diamond Bar	91765	Los Angeles County	Pomona Unified	No	(n/a)	No	(n/a)	(909) 397-4563	251	14	18.5	66.9%	25 (10.0%)	16 (6.4%)	150 (59.8%)	37 (14.7%)	0 (0.0%)	0 (0.0%)	23 (9.2%)	40.6	3190^th of 5817 public elementary schools	45.2%		42.4	3044^th of 5857 public elementary schools	48.0%	146													36.8			36.8	36.4	44.0	62.2	33.3				45.4	33.3	16.0	23.7	29.2				25.8	94%	0%	$28,404	$27,084	$1,320
Golden Springs Elementary	Public	K-6	245 South Ballena Dr.	Diamond Bar	91765	Los Angeles County	Pomona Unified	No	(n/a)	No	(n/a)	(909) 397-4596	388	16	25.0	72.2%	24 (6.2%)	14 (3.6%)	267 (68.8%)	61 (15.7%)	0 (0.0%)	0 (0.0%)	22 (5.7%)	62.7	1947^th of 5817 public elementary schools	66.5%		60.7	2029^th of 5857 public elementary schools	65.4%	82													37.3			37.3	57.4	58.5	60.0	52.9				57.0	57.4	43.4	23.9	45.7				41.8	≥ 95%		$15,868	$14,520	$1,348
Lorbeer Middle	Public	7-8	501 Diamond Bar Blvd.	Diamond Bar	91765	Los Angeles County	Pomona Unified	No	(n/a)	No	(n/a)	(909) 397-4527	688	29	24.0	74.3%	32 (4.7%)	25 (3.6%)	505 (73.4%)	90 (13.1%)	2 (0.3%)	1 (0.1%)	33 (4.8%)	51	1156^th of 2740 public middle schools	57.8%		48.4	1228^th of 2761 public middle schools	55.5%	72	0.0	3.7	1.5	9.8	18.5	13.2	4.9	3.7	4.4	0.0	3.7	1.5		32.7		32.7					49.4	51.7		50.6					32.4	33.0		32.7			$22,294	$21,034	$1,260
Pantera Elementary	Public	K-6	801 Pantera Dr.	Diamond Bar	91765	Los Angeles County	Pomona Unified	No	(n/a)	No	(n/a)	(909) 397-4475	512	22	23.6	47.9%	23 (4.5%)	7 (1.4%)	98 (19.1%)	349 (68.2%)	0 (0.0%)	0 (0.0%)	35 (6.8%)	95.9	245^th of 5817 public elementary schools	95.8%		94.8	353^rd of 5857 public elementary schools	94.0%	108													64.9			64.9	76.3	91.9	78.9	82.6				82.4	83.3	94.7	78.1	58.7				80.9	≥ 98%		$14,816	$13,418	$1,398
Castle Rock Elementary	Public	K-5	2975 Castle Rock Rd.	Diamond Bar	91765	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 598-5006	684	26	26.1	26.6%	20 (2.9%)	10 (1.5%)	132 (19.3%)	480 (70.2%)	1 (0.1%)	4 (0.6%)	37 (5.4%)	86.3	847^th of 5817 public elementary schools	85.4%		90.9	613^th of 5857 public elementary schools	89.5%	234													52.4			52.4	70.1	64.2	64.3					66.0	68.5	71.8	64.1					67.8	≥ 99%		$16,254	$15,832	$422
Chaparral Middle	Public	6-8	1405 South Spruce Tree Dr.	Diamond Bar	91765	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 861-6227	1,349	48	28.2	24.6%	48 (3.6%)	16 (1.2%)	195 (14.5%)	1,045 (77.5%)	0 (0.0%)	0 (0.0%)	45 (3.3%)	97.4	61^st of 2740 public middle schools	97.8%		97.6	60^th of 2761 public middle schools	97.8%	1														69.6		69.6				77.6	82.6	83.6		81.4				78.0	82.0	82.8		81.0			$14,509	$14,034	$475
Evergreen Elementary	Public	K-5	2450 Evergreen Springs Dr.	Diamond Bar	91765	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 594-1041	709	28	24.9	25.8%	22 (3.1%)	8 (1.1%)	146 (20.6%)	499 (70.4%)	0 (0.0%)	2 (0.3%)	32 (4.5%)	89.1	700^th of 5817 public elementary schools	88.0%		92.2	534^th of 5857 public elementary schools	90.9%	166													61.7			61.7	61.5	68.9	75.5					69.0	71.5	62.5	69.5					68.0	≥ 99%		$15,848	$15,262	$586
Maple Hill Elementary	Public	K-5	1350 Maple Hill Rd.	Diamond Bar	91765	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 861-6224	556	21	27.1	27.3%	15 (2.7%)	0 (0.0%)	70 (12.6%)	445 (80.0%)	0 (0.0%)	2 (0.4%)	24 (4.3%)	96.3	207^th of 5817 public elementary schools	96.4%		97.1	142^nd of 5857 public elementary schools	97.6%	65													65.4			65.4	80.0	83.8	82.5					82.1	84.6	82.7	72.4					79.9	97%	0%	$16,342	$16,004	$338
Diamond Bar High	Public	9-12	21400 Pathfinder Rd.	Diamond Bar	91765	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 594-1405	2,563	99	26.0	22.6%	128 (5.0%)	36 (1.4%)	440 (17.2%)	1,843 (71.9%)	0 (0.0%)	11 (0.4%)	105 (4.1%)	94.8	102^nd of 2135 public high schools	95.2%		94.8	98^th of 2162 public high schools	95.5%	4															57.7	57.7							78.2	78.2							67.8	67.8			$19,649	$19,128	$521
Quail Summit Elementary	Public	K-5	23330 East Quail Summit Dr.	Diamond Bar	91765	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 861-3004	696	28	25.3	25.0%	22 (3.2%)	11 (1.6%)	112 (16.1%)	517 (74.3%)	0 (0.0%)	0 (0.0%)	34 (4.9%)	95.1	318^th of 5817 public elementary schools	94.5%		95.5	284^th of 5857 public elementary schools	95.2%	34													75.5			75.5	71.7	69.4	82.2					74.8	81.3	76.4	84.2					80.7	≥ 99%		$16,267	$15,780	$487
Dbc Children's Center	Private, Nonsectarian	PK, KG-1	2335 S Diamond Bar Blvd	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 861-6230				—															(n/a)
Diamond Bar Montessori Academy	Private, Nonsectarian	K	23555 Palomino Dr	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 396-8747	7	2	3.5	—	3 (42.9%)	1 (14.3%)	2 (28.6%)	1 (14.3%)	0 (0.0%)	0 (0.0%)	0 (0.0%)								(n/a)
Mt Calvary Lutheran School	Private, Lutheran Church - Missouri Synod	PK, KG-8	23300 Golden Springs Dr	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 861-2740	284	12	16.0	—	35 (12.3%)	5 (1.8%)	30 (10.6%)	80 (28.2%)	0 (0.0%)	1 (0.4%)	41 (14.4%)								(n/a)																																	≥ 95%
Village Montessori Academy	Private, Nonsectarian	PK-K	23377 Golden Springs Dr	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 860-4001	47	2	5.5	—	1 (2.1%)	1 (2.1%)	1 (2.1%)	7 (14.9%)	0 (0.0%)	1 (2.1%)	0 (0.0%)								(n/a)
Landmark Christian Preschool	Private, Christian (no specific denomination)	PK-K	3338 S Diamond Canyon Rd	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 468-9299	60	3	3.6	—	0 (0.0%)	0 (0.0%)	0 (0.0%)	11 (18.3%)	1 (1.7%)	0 (0.0%)	0 (0.0%)								(n/a)
Montessori School Of Diamond Bar	Private, Nonsectarian	PK-K	3201 S Brea Canyon Rd	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 444-4649				—															(n/a)
St Christopher-Joseph-Aquinas Academic Academy	Private, Roman Catholic	K-6	1370 Valley Vista Dr Ste 200	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(909) 242-6697	35	1	35.0	—	7 (20.0%)	7 (20.0%)	7 (20.0%)	7 (20.0%)	0 (0.0%)	0 (0.0%)	7 (20.0%)								(n/a)
Guide Academy	Private, Nonsectarian	PK, KG-9	788 Leyland Dr	Diamond Bar	91765	Los Angeles County		(n/a)	(n/a)	(n/a)	(n/a)	(714) 603-7811	40	11	3.4	—	25 (62.5%)	2 (5.0%)	1 (2.5%)	4 (10.0%)	2 (5.0%)	1 (2.5%)	3 (7.5%)								(n/a)

Cities Near Zip Code 91765

City	Distance	# of Schools	Statewide Rank
Diamond Bar	0.45 mi	10	115^th
Walnut	2.05 mi	11	88^th
Pomona	2.56 mi	37	655^th
Chino Hills	3.63 mi	16	76^th
West Covina	3.67 mi	26	360^th

See the top CA California cities

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