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Best Middle Schools in Zip Code 91765

At a glance

Schools

2,037

Students

Districts

5-star school

Top rankedChaparral Middle60^th of 2,761 California middle schools

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Biggest riser

Lorbeer Middle up 21 spots statewide this year

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Summary:

Zip code 91765 in Diamond Bar, California, is served by two middle schools, Chaparral Middle and Lorbeer Middle, which serve grades 6-8 and 7-8 respectively and present a striking contrast in performance and student population despite sharing the same zip code.

Chaparral Middle is a top-ranked, five-star school in the Walnut Valley Unified district, with over 80% of students proficient in English and math and a very low chronic absenteeism rate of 3.2%. In comparison, Lorbeer Middle, part of the Pomona Unified district, is a mid-tier, three-star school where less than half of students are proficient in core subjects and chronic absenteeism is notably higher at 17.9%.

The analysis reveals that the district a school belongs to is a strong indicator of performance, and it highlights an inverse relationship between spending and outcomes, as Lorbeer receives significantly more funding per student yet has lower academic results. This comparison within one zip code shows how educational experiences and resources can vary dramatically for middle school students in the same community.

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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 (2025)				Ranking (2024)				CSA Spanish Overall (2025)			CSA Spanish Listening (2025)			CSA Spanish Writing (2025)			CSA Spanish Reading (2025)			CAST Science (2025)		Smarter Balanced Assessments English Language Arts/Literacy (2025)				Smarter Balanced Assessments Mathematics (2025)				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	White	Black	Hispanic	Asian	American Indian	Pacific Islander	Two or More Races	Average Standard Score (2025)	Statewide Rank (2025)	State Percentile (2025)	SchoolDigger Rating (2025)	Average Standard Score (2024)	Statewide Rank (2024)	State Percentile (2024)	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
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%)	48.4	1228^th of 2761 public middle schools	55.5%		46.9	1249^th of 2783 public middle schools	55.1%	21	7.1	5.6	6.5	14.3	11.1	13.0	14.3	5.6	10.9	7.1	5.6	6.5	28.3	28.3		49.3	45.4	47.4		31.3	30.0	30.6	$22,294	$21,034	$1,260
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%)	97.6	60^th of 2761 public middle schools	97.8%		98	49^th of 2783 public middle schools	98.2%	11													66.3	66.3	79.3	88.5	80.9	82.9	76.6	86.3	78.2	80.3	$14,509	$14,034	$475

Cities Near Zip Code 91765

City	Distance	# of Schools	Statewide Rank
Diamond Bar	0.45 mi	10	118^th
Walnut	2.05 mi	11	84^th
Pomona	2.56 mi	37	663^rd
Chino Hills	3.63 mi	16	150^th
West Covina	3.67 mi	26	322^nd

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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.