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Chaparral Middle

Public Grades 6-8

61^st

SchoolDigger Rank ?

of 2,740 California Middle Schools

Better than 98% of California middle schools

Summary

In Diamond Bar, California, Chaparral Middle serves grades 6–8 and enrolls 1,349 students in Walnut Valley Unified. Its 2025–26 results show exceptional proficiency across all three tested subjects: 81% in English Language Arts/Literacy (ELA), 81% in math and 70% in science. The most important finding is that Chaparral’s achievement is strong across subjects, not just in one area.

Chaparral leads nearby schools in all-grade ELA and math: its results are 3 percentage points above the next-highest nearby school in ELA and 1 point higher in math. Compared with state results, Chaparral is ahead by 32 points in ELA, 43 in math and 34 in science; its leads over district results are 6, 9 and 6 points, respectively. Science is the relative weakness against its closest high-performing peer: South Pointe Middle scores 74%, compared with Chaparral’s 70%. Attendance is another standout: chronic absenteeism is 3%, the lowest among nearby schools, versus 6% in the district and 18% statewide.

Results have remained strong over time: from 2022–23 to 2025–26, ELA was nearly flat, while math rose 7 percentage points and science rose 6. SchoolDigger ranks Chaparral 60th of 2,703 California schools, at the 98th percentile, with five stars. Its 2024–25 student-teacher ratio is 28.2, the highest among nearby schools, and 25% of students were free/reduced lunch eligible that year. SchoolDigger’s statewide ranking for effectiveness serving White students is at the 72nd percentile, below Chaparral’s overall 98th; its ranking for Asian students is at the 78th percentile. The Multi-racial Students ranking has varied, moving from the 80th percentile in 2023–24 to the 61st in 2024–25 and 78th in 2025–26.

1,349

Students ?

28.2

Student/teacher ratio ?

$14,509

Per pupil spending ?

24.6%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

1405 South Spruce Tree Dr.
Diamond Bar, CA 91765-2571

(909) 861-6227

District: Walnut Valley Unified

Students who attend Chaparral Middle usually attend:

High:

Diamond Bar High

Feeder schools for Chaparral Middle:

Elementary:	Evergreen Elementary
	Maple Hill Elementary
	Quail Summit Elementary

Racial breakdown:

Asian:

77.5%

Hispanic:

14.5%

White:

3.6%

See top rated California middle schools

Compare Chaparral Middle to nearby middle schools!

At a glance

▬ Ranking trend: Holding steady — 95th percentile in 2015 → 98th in 2026

Strengths

✓Test scores above the California average (80% vs 42% meeting standards)

✓Ranks in the top 2% of California middle schools

Worth a look

!Some student groups rank well below the school's overall statewide standing

!Large classes — about 28 students per teacher

Students meeting standards (2025-2026) ?

This school80%

District avg72%

California avg42%

61^st of 2,740

California public middle schools ?

Top 2%▲ up 3 pts since 2016

See the entire ranking list of California Middle Schools →

★★★★★

SchoolDigger rating ?

1^st of 3Middle Schools in the Walnut Valley Unified

81^st of 1,530Walnut Valley Unified among California districts

Statewide rank percentile over time (100 = the top-ranked school in the state; click a legend item to add a student group)

Show full rank history (all student groups)

All Students

Year	Avg score	Statewide rank	California percentile	Rating
2026	97.4	61 of 2740	97.8%	★★★★★
2025	97.6	60 of 2761	97.8%	★★★★★
2024	98.0	49 of 2783	98.2%	★★★★★
2023	97.8	61 of 2781	97.8%	★★★★★
2022	97.5	71 of 2740	97.4%	★★★★★
2019	95.7	106 of 2715	96.1%	★★★★★
2018	96.0	90 of 2480	96.4%	★★★★★
2017	95.9	93 of 2508	96.3%	★★★★★
2016	94.0	123 of 2497	95.1%	★★★★★
2015	94.5	114 of 2477	95.4%	★★★★★
2013	88.3	115 of 2379	95.2%	★★★★★
2012	87.3	141 of 2259	93.8%	★★★★★
2011	89.0	113 of 2236	94.9%	★★★★★
2010	89.4	109 of 2179	95.0%	★★★★★
2009	88.0	135 of 2063	93.5%	★★★★★
2008	86.1	174 of 2005	91.3%	★★★★★
2007	90.0	128 of 1999	93.6%	★★★★★
2006	93.3	63 of 1804	96.5%	★★★★★
2005	92.2	75 of 1777	95.8%	★★★★★
2004	90.4	111 of 1769	93.7%	★★★★★

African American

Year	Avg score	Statewide rank	California percentile	Rating
2019	97.6	12 of 643	98.1%	★★★★★
2018	99.4	3 of 600	99.5%	★★★★★

Asian

Year	Avg score	Statewide rank	California percentile	Rating
2026	76.5	176 of 777	77.3%	★★★★☆
2025	79.5	131 of 739	82.3%	★★★★☆
2024	78.4	136 of 743	81.7%	★★★★☆
2023	79.1	119 of 715	83.4%	★★★★☆
2022	78.2	143 of 733	80.5%	★★★★☆
2019	73.5	206 of 745	72.3%	★★★★☆
2018	79.3	115 of 700	83.6%	★★★★☆

Disabled

Year	Avg score	Statewide rank	California percentile	Rating
2022	92.3	71 of 1531	95.4%	★★★★★
2019	77.1	211 of 1491	85.8%	★★★★☆
2018	78.6	181 of 1369	86.8%	★★★★☆

English Language Learner

Year	Avg score	Statewide rank	California percentile	Rating
2024	99.3	8 of 1478	99.5%	★★★★★
2023	88.9	60 of 1521	96.1%	★★★★★
2022	91.8	50 of 1540	96.8%	★★★★★
2019	97.1	28 of 1442	98.1%	★★★★★
2018	99.1	20 of 1364	98.5%	★★★★★

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	96.5	65 of 2516	97.4%	★★★★★
2025	96.6	68 of 2533	97.3%	★★★★★
2024	97.1	59 of 2551	97.7%	★★★★★
2023	96.6	84 of 2531	96.7%	★★★★★
2022	96.0	96 of 2509	96.2%	★★★★★
2019	94.3	119 of 2380	95.0%	★★★★★
2018	95.7	73 of 2262	96.8%	★★★★★

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2026	94.0	84 of 2357	96.4%	★★★★★
2025	91.5	133 of 2395	94.4%	★★★★★
2024	92.7	108 of 2388	95.5%	★★★★★
2023	86.5	198 of 2374	91.7%	★★★★★
2022	85.9	195 of 2359	91.7%	★★★★★
2019	89.6	144 of 2213	93.5%	★★★★★
2018	90.2	134 of 2072	93.5%	★★★★★

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2026	98.2	30 of 2529	98.8%	★★★★★
2025	99.4	14 of 2542	99.4%	★★★★★
2024	99.3	19 of 2579	99.3%	★★★★★
2023	99.3	12 of 2531	99.5%	★★★★★
2022	99.1	22 of 2458	99.1%	★★★★★
2019	96.6	43 of 2369	98.2%	★★★★★
2018	96.9	44 of 2230	98.0%	★★★★★

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	97.3	60 of 2514	97.6%	★★★★★
2025	97.4	60 of 2534	97.6%	★★★★★
2024	98.1	45 of 2552	98.2%	★★★★★
2023	98.0	46 of 2538	98.2%	★★★★★
2022	97.8	53 of 2527	97.9%	★★★★★
2019	95.9	99 of 2407	95.9%	★★★★★
2018	95.4	105 of 2273	95.4%	★★★★★

Multi-racial

Year	Avg score	Statewide rank	California percentile	Rating
2026	75.3	160 of 735	78.2%	★★★★☆
2025	62.0	283 of 726	61.0%	★★★☆☆
2024	77.9	139 of 701	80.2%	★★★★☆
2023	83.1	87 of 677	87.1%	★★★★☆
2022	81.5	94 of 665	85.9%	★★★★☆
2019	85.8	43 of 554	92.2%	★★★★★
2018	77.2	94 of 462	79.7%	★★★★☆

Special Education

Year	Avg score	Statewide rank	California percentile	Rating
2026	83.9	147 of 1605	90.8%	★★★★★
2025	95.1	50 of 1566	96.8%	★★★★★
2024	82.3	162 of 1552	89.6%	★★★★☆
2023	79.9	166 of 1531	89.2%	★★★★☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2026	69.5	420 of 1490	71.8%	★★★★☆
2025	72.1	386 of 1520	74.6%	★★★★☆
2024	73.4	361 of 1537	76.5%	★★★★☆
2023	70.0	416 of 1543	73.0%	★★★★☆
2022	76.6	304 of 1555	80.5%	★★★★☆
2019	71.2	428 of 1602	73.3%	★★★★☆
2018	67.5	482 of 1496	67.8%	★★★☆☆

How student groups rank statewide ? (each group's percentile vs the same group at other schools — higher is better; the +/- beside each compares the group with this school's overall percentile)

English Language Learner (2024)99th percentile~ school

Low Socio Economic Status (2026)99th percentile~ school

African American (2019)98th percentile~ school

Male (2026)98th percentile~ school

Female (2026)97th percentile~ school

Hispanic (2026)96th percentile~ school

Disabled (2022)95th percentile~ school

Special Education (2026)91st percentile-7 vs school

Multi-racial (2026)78th percentile-20 vs school

Asian (2026)77th percentile-20 vs school

White (2026)72nd percentile-26 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy81%+32 vs state

Mathematics81%+43 vs state

Science70%+34 vs state

★

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Schools Near Chaparral Middle

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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)				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)				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 8th Grade	CAST Science All Grades	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 All Grades	Smarter Balanced Assessments Mathematics 6th Grade	Smarter Balanced Assessments Mathematics 7th Grade	Smarter Balanced Assessments Mathematics 8th Grade	Smarter Balanced Assessments Mathematics All Grades	Per Pupil Expenditures Total	Sub-total from Federal Funds	Sub-total from State/Local Funds
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
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
South Pointe Middle	Public	6-8	20671 Larkstone Dr.	Walnut	91789	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 595-8171	979	38	25.5	25.0%	19 (1.9%)	4 (0.4%)	156 (15.9%)	762 (77.8%)	1 (0.1%)	3 (0.3%)	34 (3.5%)	97	80^th of 2740 public middle schools	97.1%		97.1	79^th of 2761 public middle schools	97.1%	1													73.7	73.7	77.6	82.0	77.2	78.9	80.1	81.6	78.6	80.1	$15,897	$15,164	$733
Suzanne Middle	Public	6-8	525 Suzanne Rd.	Walnut	91789	Los Angeles County	Walnut Valley Unified	No	(n/a)	No	(n/a)	(909) 594-1657	1,190	45	26.3	24.5%	51 (4.3%)	7 (0.6%)	293 (24.6%)	779 (65.5%)	0 (0.0%)	1 (0.1%)	59 (5.0%)	92.3	210^th of 2740 public middle schools	92.3%		92.8	204^th of 2761 public middle schools	92.6%	6													63.8	63.8	68.7	74.2	79.8	74.1	66.2	68.8	58.8	64.7	$16,577	$16,068	$509
Canyon Hills Junior High	Public	7-8	2500 Madrugada Dr.	Chino Hills	91709	San Bernardino County	Chino Valley Unified	No	(n/a)	No	(n/a)	(909) 464-9938	1,070	40	26.7	46.8%	128 (12.0%)	28 (2.6%)	311 (29.1%)	554 (51.8%)	0 (0.0%)	2 (0.2%)	47 (4.4%)	94.1	163^rd of 2740 public middle schools	94.1%		93.7	187^th of 2761 public middle schools	93.2%	24													65.0	65.0		80.0	73.8	76.7		74.3	62.5	68.1	$16,952	$16,028	$924
Alvarado Intermediate	Public	7-8	1901 South Desire Ave.	Rowland Heights	91748	Los Angeles County	Rowland Unified	No	(n/a)	No	(n/a)	(626) 964-2358	624	28	22.4	79.8%	9 (1.4%)	3 (0.5%)	299 (47.9%)	290 (46.5%)	1 (0.2%)	2 (0.3%)	20 (3.2%)	55.3	1049^th of 2740 public middle schools	61.7%		56.4	989^th of 2761 public middle schools	64.2%	60													36.1	36.1		44.3	44.4	44.3		41.3	44.8	43.0	$15,835	$15,378	$457
Marshall Middle	Public	6-8	1921 Arroyo Ave.	Pomona	91768	Los Angeles County	Pomona Unified	No	(n/a)	No	(n/a)	(909) 397-4532	249	16	15.5	96.4%	5 (2.0%)	6 (2.4%)	233 (93.6%)	4 (1.6%)	0 (0.0%)	1 (0.4%)	0 (0.0%)	25.5	1992^nd of 2740 public middle schools	27.3%		32.6	1735^th of 2761 public middle schools	37.2%	257													19.0	19.0		37.8	41.3	39.7		19.1	12.4	15.7	$54,720	$53,274	$1,446
Giano Intermediate	Public	7-8	3223 South Giano Ave.	West Covina	91792	Los Angeles County	Rowland Unified	No	(n/a)	No	(n/a)	(626) 965-2461	463	23	19.9	94.6%	7 (1.5%)	4 (0.9%)	422 (91.1%)	21 (4.5%)	0 (0.0%)	0 (0.0%)	8 (1.7%)	31.6	1769^th of 2740 public middle schools	35.4%		33.2	1708^th of 2761 public middle schools	38.1%	61													26.0	26.0		39.8	32.9	35.9		26.5	24.7	25.5	$17,144	$16,290	$854
Robert O. Townsend Junior High	Public	7-8	15359 Ilex Dr.	Chino Hills	91710	San Bernardino County	Chino Valley Unified	No	(n/a)	No	(n/a)	(909) 591-2161	905	37	24.4	54.8%	138 (15.2%)	34 (3.8%)	375 (41.4%)	317 (35.0%)	0 (0.0%)	3 (0.3%)	37 (4.1%)	86.2	338^th of 2740 public middle schools	87.7%		91.1	248^th of 2761 public middle schools	91.0%	90													54.8	54.8		68.4	64.7	66.6		65.2	53.6	59.5	$18,255	$17,330	$925
Simons Middle	Public	6-8	900 East Franklin Ave.	Pomona	91766	Los Angeles County	Pomona Unified	No	(n/a)	No	(n/a)	(909) 397-4544	578	27	21.3	95.8%	8 (1.4%)	7 (1.2%)	546 (94.5%)	14 (2.4%)	0 (0.0%)	1 (0.2%)	2 (0.3%)	15.1	2434^th of 2740 public middle schools	11.2%		19.7	2240^th of 2761 public middle schools	18.9%	194													14.9	14.9	10.3	25.4	31.4	25.6	7.0	13.6	14.2	12.8	$11,637	$10,322	$1,315

Frequently Asked Questions about Chaparral Middle

What is the racial makeup of Chaparral Middle?

Students at Chaparral Middle are 77% Asian, 14% Hispanic, 4% White, 3% Two or more races, 1% African American.

How many students attend Chaparral Middle?

In the 2024-25 school year, 1,349 students attended Chaparral Middle.

Is Chaparral Middle a good school?

Yes! Chaparral Middle is one of the best middle schools in the state. It ranks 61^st of 2740 California middle schools.

What district is Chaparral Middle in?

Walnut Valley Unified

What high school do graduates of Chaparral Middle attend?

Students who attend Chaparral Middle usually go on to attend Diamond Bar High

Rate Chaparral Middle!

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Latest California data All new data »

2013–14 through 2024–25 immunization rates (updated)NewOct 19, 2026

2025–26 attendance data, dropout rates & graduation ratesNewOct 15, 2026

2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresNewOct 15, 2026

2024–25 school spending dataJul 1, 2026

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.