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Arma J. Shull Elementary

Public Grades K-5

367^th

SchoolDigger Rank ?

of 5,817 California Elementary Schools

Better than 94% of California elementary schools

Summary

Arma J. Shull Elementary is a K–5 school in San Dimas, in Bonita Unified, serving 633 students. In 2025–2026, its proficiency rates were well above district and state results in English language arts (ELA), math, and science. Its most important distinction is strong performance across all three subjects, including the highest ELA and science results among 10 nearby schools with data.

Compared with nearby schools, Shull ranked first in ELA and science and second in math; its results were 14 points above the local average in ELA, 15 points above in math, and 23 points above in science. Shull’s proficiency was 77% in ELA, 75% in math, and 69% in science. Those figures exceeded Bonita Unified by 4, 11, and 9 percentage points, respectively, and California by 27, 36, and 33 points. Science is Shull’s clearest advantage over nearby schools. Its 633 students are also the largest enrollment in the nearby group, whose schools average about 480.

ELA and math results have declined since 2022–2023: ELA fell from 83% to 77% (6 points), and math from 83% to 75% (8 points); science was essentially flat, moving from 68% to 69%. Shull remains near the top locally: SchoolDigger gives it 5 stars and a 94th-percentile statewide ranking, the highest among nearby schools, although down from the 97th percentile in 2022–2023. SchoolDigger’s statewide subgroup rankings are lower for White students (62nd percentile) and multi-racial students (66th) than for the school overall (94th). In 2024–2025, Shull had 27.7 students per teacher, above nearby schools with reported ratios, and 26% of students were free/reduced lunch eligible. These are context for families, not explanations for test results.

633

Students ?

27.7

Student/teacher ratio ?

$16,221

Per pupil spending ?

26.1%

Free/reduced lunch eligible (2024-25) ?

All students in California receive free school meals.

≥ 99%

Kindergartners with all required immunizations (2024-25)

825 North Amelia
San Dimas, CA 91773-1437

(909) 971-8208

District: Bonita Unified

Students who attend Arma J. Shull Elementary usually attend:

Middle:	Lone Hill Middle
High:	San Dimas High

Racial breakdown:

Hispanic:

48.0%

Asian:

22.0%

White:

19.0%

See top rated California elementary schools

Compare Arma J. Shull Elementary to nearby elementary schools!

At a glance

▬ Ranking trend: Holding steady — 91st percentile in 2015 → 94th in 2026

Strengths

✓Test scores above the California average (75% vs 42% meeting standards)

✓Ranks in the top 6% of California elementary schools

✓Among the top-ranked schools in Bonita Unified

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 school75%

District avg67%

California avg42%

367^th of 5,817

California public elementary schools ?

Top 6%▲ up 1 pts since 2016

See the entire ranking list of California Elementary Schools →

★★★★★

SchoolDigger rating ?

1^st of 8Elementary Schools in the Bonita Unified

201^st of 1,530Bonita 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	94.5	367 of 5817	93.7%	★★★★★
2025	95.6	271 of 5857	95.4%	★★★★★
2024	96.5	218 of 5869	96.3%	★★★★★
2023	97.2	171 of 5859	97.1%	★★★★★
2022	95.6	324 of 5883	94.5%	★★★★★
2019	94.8	305 of 5789	94.7%	★★★★★
2018	95.8	227 of 5662	96.0%	★★★★★
2017	95.7	278 of 5692	95.1%	★★★★★
2016	93.7	399 of 5614	92.9%	★★★★★
2015	92.1	498 of 5611	91.1%	★★★★★
2013	92.2	309 of 5530	94.4%	★★★★★
2012	92.4	255 of 5390	95.3%	★★★★★
2011	95.0	131 of 5377	97.6%	★★★★★
2010	88.9	505 of 5314	90.5%	★★★★★
2009	89.5	504 of 5193	90.3%	★★★★★
2008	87.2	653 of 5113	87.2%	★★★★☆
2007	89.8	524 of 5113	89.8%	★★★★☆
2006	79.9	973 of 4818	79.8%	★★★★☆
2005	76.8	1063 of 4822	78.0%	★★★★☆
2004	78.1	978 of 4809	79.7%	★★★★☆

Asian

Year	Avg score	Statewide rank	California percentile	Rating
2026	86.0	42 of 1210	96.5%	★★★★★
2025	85.0	50 of 1203	95.8%	★★★★★
2024	83.8	79 of 1205	93.4%	★★★★★
2023	84.6	49 of 1190	95.9%	★★★★★
2022	73.8	304 of 1154	73.7%	★★★★☆

Disabled

Year	Avg score	Statewide rank	California percentile	Rating
2019	90.7	167 of 2585	93.5%	★★★★★
2018	86.2	198 of 2128	90.7%	★★★★★

Female

Year	Avg score	Statewide rank	California percentile	Rating
2026	92.7	416 of 5581	92.5%	★★★★★
2025	95.8	195 of 5597	96.5%	★★★★★
2024	93.7	389 of 5612	93.1%	★★★★★
2023	96.2	193 of 5609	96.6%	★★★★★
2022	92.8	465 of 5635	91.7%	★★★★★
2019	95.0	223 of 5492	95.9%	★★★★★
2018	95.3	207 of 5413	96.2%	★★★★★

Hispanic

Year	Avg score	Statewide rank	California percentile	Rating
2026	97.6	64 of 5094	98.7%	★★★★★
2025	98.6	28 of 5107	99.5%	★★★★★
2024	99.2	21 of 5107	99.6%	★★★★★
2023	99.2	25 of 5087	99.5%	★★★★★
2022	98.5	54 of 5084	98.9%	★★★★★
2019	98.0	58 of 4963	98.8%	★★★★★
2018	99.1	23 of 4830	99.5%	★★★★★

Low Socio Economic Status

Year	Avg score	Statewide rank	California percentile	Rating
2026	95.9	136 of 5423	97.5%	★★★★★
2025	96.6	114 of 5460	97.9%	★★★★★
2024	98.4	86 of 5517	98.4%	★★★★★
2023	94.8	199 of 5363	96.3%	★★★★★
2022	96.0	147 of 5264	97.2%	★★★★★
2019	98.4	31 of 5173	99.4%	★★★★★
2018	98.4	31 of 5084	99.4%	★★★★★

Male

Year	Avg score	Statewide rank	California percentile	Rating
2026	93.9	325 of 5603	94.2%	★★★★★
2025	93.5	366 of 5628	93.5%	★★★★★
2024	96.4	166 of 5643	97.1%	★★★★★
2023	96.6	186 of 5638	96.7%	★★★★★
2022	96.0	233 of 5663	95.9%	★★★★★
2019	92.8	390 of 5510	92.9%	★★★★★
2018	95.0	245 of 5431	95.5%	★★★★★

Multi-racial

Year	Avg score	Statewide rank	California percentile	Rating
2026	68.0	257 of 753	65.9%	★★★☆☆
2024	74.2	177 of 670	73.6%	★★★★☆
2022	72.2	171 of 610	72.0%	★★★★☆

Special Education

Year	Avg score	Statewide rank	California percentile	Rating
2025	81.6	356 of 2847	87.5%	★★★★☆
2023	77.0	354 of 2420	85.4%	★★★★☆

White

Year	Avg score	Statewide rank	California percentile	Rating
2026	64.7	953 of 2536	62.4%	★★★☆☆
2025	82.6	318 of 2598	87.8%	★★★★☆
2024	85.9	212 of 2651	92.0%	★★★★★
2023	93.5	21 of 2661	99.2%	★★★★★
2022	92.9	33 of 2726	98.8%	★★★★★
2019	86.3	210 of 2834	92.6%	★★★★★
2018	82.3	373 of 2737	86.4%	★★★★☆

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)

Hispanic (2026)99th percentile+5 vs school

Low Socio Economic Status (2026)97th percentile+4 vs school

Asian (2026)97th percentile+3 vs school

Male (2026)94th percentile~ school

Disabled (2019)94th percentile~ school

Female (2026)93rd percentile~ school

Special Education (2025)87th percentile-8 vs school

Multi-racial (2026)66th percentile-28 vs school

White (2026)62nd percentile-31 vs school

By subject vs California (2025-2026) ?

English Language Arts/Literacy77%+27 vs state

Mathematics75%+36 vs state

Science69%+33 vs state

★

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Schools Near Arma J. Shull Elementary

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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)				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	CAST Science 5th 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 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 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
Arma J. Shull Elementary	Public	K-5	825 North Amelia	San Dimas	91773	Los Angeles County	Bonita Unified	No	(n/a)	No	(n/a)	(909) 971-8208	633	23	27.7	26.1%	120 (19.0%)	5 (0.8%)	304 (48.0%)	139 (22.0%)	0 (0.0%)	0 (0.0%)	65 (10.3%)	94.5	367^th of 5817 public elementary schools	93.7%		95.6	271^st of 5857 public elementary schools	95.4%	96	68.6	68.6	73.2	73.5	82.9		76.6	78.6	76.5	69.5		74.8	≥ 99%		$16,221	$311	$15,910
Sutherland Elementary	Public	K-5	1330 North Amelia Ave.	Glendora	91740	Los Angeles County	Glendora Unified	No	(n/a)	No	(n/a)	(626) 852-4614	488	25	19.7	19.3%	109 (22.3%)	2 (0.4%)	251 (51.4%)	102 (20.9%)	0 (0.0%)	0 (0.0%)	24 (4.9%)	73.9	1408^th of 5817 public elementary schools	75.8%		78.2	1235^th of 5857 public elementary schools	78.9%	173	38.5	38.5	64.3	61.6	55.1		60.2	68.6	58.9	44.9		57.0	≥ 99%		$16,675	$993	$15,682
Gladstone Elementary	Public	K-5	1314 West Gladstone	San Dimas	91773	Los Angeles County	Bonita Unified	No	(n/a)	No	(n/a)	(909) 971-8204	518	23	22.1	34.7%	92 (17.8%)	4 (0.8%)	302 (58.3%)	79 (15.3%)	1 (0.2%)	0 (0.0%)	40 (7.7%)	85	919^th of 5817 public elementary schools	84.2%		84.1	952^nd of 5857 public elementary schools	83.7%	33	58.8	58.8	55.4	56.8	74.1		62.7	71.6	62.7	67.1		67.1	98%	0%	$16,491	$413	$16,078
Fred Ekstrand Elementary	Public	K-5	400 North Walnut Ave.	San Dimas	91773	Los Angeles County	Bonita Unified	No	(n/a)	No	(n/a)	(909) 971-8203	475	22	21.5	47.8%	58 (12.2%)	11 (2.3%)	321 (67.6%)	36 (7.6%)	0 (0.0%)	1 (0.2%)	48 (10.1%)	73.3	1434^th of 5817 public elementary schools	75.3%		74.5	1399^th of 5857 public elementary schools	76.1%	35	44.9	44.9	56.9	58.2	57.1		57.4	66.7	52.2	47.4		55.3	93%	0%	$17,138	$575	$16,563
Willow Elementary	Public	K-6	1427 South Willow	Glendora	91740	Los Angeles County	Charter Oak Unified	No	(n/a)	No	(n/a)	(626) 914-5839	388	17	22.8	70.6%	63 (16.2%)	14 (3.6%)	250 (64.4%)	47 (12.1%)	2 (0.5%)	0 (0.0%)	12 (3.1%)	66.4	1760^th of 5817 public elementary schools	69.7%		67	1743^rd of 5857 public elementary schools	70.2%	17	35.0	35.0	75.6	47.9	52.5	58.5	58.2	77.5	41.7	40.0	41.5	49.2	92%	0%	$22,091	$1,924	$20,167
Allen Avenue Elementary	Public	K-5	740 East Allen Ave.	San Dimas	91773	Los Angeles County	Bonita Unified	No	(n/a)	No	(n/a)	(909) 971-8202	467	21	21.8	36.8%	93 (19.9%)	11 (2.4%)	266 (57.0%)	59 (12.6%)	0 (0.0%)	0 (0.0%)	38 (8.1%)	81.7	1055^th of 5817 public elementary schools	81.9%		73.6	1441^st of 5857 public elementary schools	75.4%	386	50.0	50.0	68.2	58.5	63.5		63.4	68.2	58.5	57.8		61.5	97%	0%	$16,337	$395	$15,942
Glen Oak Elementary	Public	K-6	1000 North Sunflower Ave.	Covina	91724	Los Angeles County	Charter Oak Unified	No	(n/a)	No	(n/a)	(626) 331-5341	428	20	21.4	75.2%	56 (13.1%)	6 (1.4%)	332 (77.6%)	20 (4.7%)	1 (0.2%)	0 (0.0%)	13 (3.0%)	54.8	2341^st of 5817 public elementary schools	59.8%		44.3	2930^th of 5857 public elementary schools	50.0%	589	32.6	32.6	66.7	37.5	56.5	43.1	50.8	66.7	45.8	34.8	19.6	41.5	98%	0%	$21,816	$1,195	$20,621
Sellers Elementary	Public	K-5	500 North Loraine Ave.	Glendora	91741	Los Angeles County	Glendora Unified	No	(n/a)	No	(n/a)	(626) 852-4574	545	25	22.0	13.2%	230 (42.2%)	3 (0.6%)	192 (35.2%)	93 (17.1%)	0 (0.0%)	1 (0.2%)	26 (4.8%)	76.6	1295^th of 5817 public elementary schools	77.7%		78.1	1238^th of 5857 public elementary schools	78.9%	57	43.6	43.6	59.5	64.6	60.9		61.6	64.9	59.5	49.1		56.7	98%	2%	$16,254	$983	$15,271
Cullen Elementary	Public	K-5	440 North Live Oak Ave.	Glendora	91741	Los Angeles County	Glendora Unified	No	(n/a)	No	(n/a)	(626) 852-4593	569	24	23.4	19.5%	163 (28.6%)	6 (1.1%)	257 (45.2%)	106 (18.6%)	0 (0.0%)	1 (0.2%)	36 (6.3%)	77.5	1244^th of 5817 public elementary schools	78.6%		83.1	1008^th of 5857 public elementary schools	82.8%	236	38.5	38.5	59.3	64.1	59.0		60.9	66.3	66.7	50.0		61.5	≥ 99%		$16,433	$987	$15,446
Grace Miller Elementary	Public	K-5	1629 Holly Oak St.	La Verne	91773	Los Angeles County	Bonita Unified	No	(n/a)	No	(n/a)	(909) 971-8206	448	20	22.4	41.7%	87 (19.4%)	9 (2.0%)	302 (67.4%)	23 (5.1%)	0 (0.0%)	2 (0.4%)	25 (5.6%)	94	403^rd of 5817 public elementary schools	93.1%		93	474^th of 5857 public elementary schools	91.9%	71	66.7	66.7	62.9	73.9	89.4		75.1	81.7	89.2	69.7		80.2	91%	0%	$17,051	$490	$16,561

Frequently Asked Questions about Arma J. Shull Elementary

What schools do graduates of Arma J. Shull Elementary attend?

Students who attend Arma J. Shull Elementary usually go on to attend:

Middle : Lone Hill Middle
High : San Dimas High

How many students attend Arma J. Shull Elementary?

In the 2024-25 school year, 633 students attended Arma J. Shull Elementary.

What is the racial makeup of Arma J. Shull Elementary?

Students at Arma J. Shull Elementary are 48% Hispanic, 22% Asian, 19% White, 10% Two or more races.

Is Arma J. Shull Elementary a good school?

Yes. Arma J. Shull Elementary ranks in the top 6.3% of California elementary schools.

What district is Arma J. Shull Elementary in?

Bonita Unified

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Latest California data All new data »

2024–25 school spending data (updated)NewNov 2, 2026

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

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

2025–26 CAST, CSA Spanish & Smarter Balanced Assessments scoresOct 15, 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.