San Dimas High

Summary:

San Dimas High is a public high school serving 1,251 students in grades 9-12 in the Bonita Unified School District in San Dimas, California. This high-performing school has consistently been ranked among the top high schools in the state, with a statewide ranking between 302 and 520 over the past 10 years and a 4 out of 5 star rating from SchoolDigger.

San Dimas High stands out for its exceptional academic outcomes, including very high four-year graduation rates ranging from 93.8% to 98.3% over the past 5 years, and very low dropout rates from 0.0% to 2.1% during the same period. The school's students also consistently outperform state and district averages on standardized tests, with 77.21% of 11th graders proficient or better in ELA/Literacy in 2023-2024, compared to 55.73% statewide. San Dimas High's Hispanic and Asian student subgroups perform particularly well, ranking in the top 20% and top 30% of California high schools, respectively.

Compared to nearby schools, San Dimas High generally outperforms them on key metrics, with the exception of Bonita High, another high-performing school in the same district. San Dimas High also has a relatively low student-teacher ratio of 20.6, which may contribute to its academic success. While the school's chronic absenteeism rates have increased in recent years, it still maintains lower rates than the state average, making it an attractive option for families in the area.


Detail:

Public 9-12

 800 West Covina Blvd.
       San Dimas, CA  91773-1473


(909) 971-8230

District: Bonita Unified

SchoolDigger Rank:
326th of 2,323 California High Schools


Feeder schools for San Dimas High:

Elementary:    Arma J. Shull Elementary
    Fred Ekstrand Elementary
    Gladstone Elementary
Middle:    Lone Hill Middle

Student/teacher ratio:  20.9 Help
Number of students:  1,248

Racial breakdown:

Hispanic:
60.5%
White:
18.9%
Asian:
9.5%
more

Free/discounted lunch recipients:  32.5% Help


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Performance Trends
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Compare Details San Dimas High ranks better than 86% of high schools in California. It also ranks 2nd among 3 ranked high schools in the Bonita Unified School District. (See more...)
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Compare Details In 2024 the calculated Average Standard Score was 80.21. (See more...)
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The four-year cohort graduation rate measures the percentage of students at San Dimas High who earn a standard high school diploma within four years of starting ninth grade.
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The high school dropout rate measures the percentage of students who do not complete their high school education.
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Chronic absenteeism in a school refers to a situation where students repeatedly miss school, with the threshold often defined as missing 10% or more of school days for any reason, excused or unexcused.
Student Body
Help
Compare Details Racial makeup is: Hispanic (60.5%), White (18.9%), Asian (9.5%). (See more...)
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Compare Details 32.5% of students are receiving a free or discounted lunch. (See more...)
Teachers
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Compare Details The student/teacher ratio at San Dimas High is 20.9. 2 high schools in the Bonita Unified School District have better student/teacher ratios. (See more...)
Help
Compare San Dimas High employs 59.5 full-time teachers.
Schooldigger 2024 Rankings:

San Dimas High:

SchoolDigger ranks San Dimas High 326th of 2323 California public high schools. (See San Dimas High in the ranking list.)

High School Test Score Ratings by Student Subgroup:


Multi-racial students:
English Language Learner students:
Special Education students:
Low Socio Economic Status students:
Female students:
Male students:
Asian students:
African American students:
Hispanic students:
White students:


Bonita Unified:

SchoolDigger ranks Bonita Unified 294th of 1568 California school districts. (See district ranking list.)


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Rank History for San Dimas High

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Rank History for all students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2004 59.59 349th 1653 78.9%
2005 58.12 446th 1901 76.5%
2006 58.74 488th 1968 75.2%
2007 53.82 566th 2063 72.6%
2008 55.67 557th 2117 73.7%
2009 61.99 409th 2238 81.7%
2010 63.39 433rd 2281 81.0%
2011 70.54 295th 2367 87.5%
2012 66.92 366th 2354 84.5%
2013 73.52 244th 2426 89.9%
2015 84.61 279th 1994 86.0%
2016 71.91 520th 2039 74.5%
2017 85.32 308th 2021 84.8%
2018 84.84 316th 2017 84.3%
2019 83.41 302nd 2133 85.8%
2021 97.03 32nd 1290 97.5%
2022 81.73 335th 2123 84.2%
2023 79.65 334th 2348 85.8%
2024 80.21 326th 2323 86.0%
See the entire list of California High School Rankings!

Rank History for Multi-racial students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 46.31 215th 366 41.3%
2019 65.70 144th 422 65.9%
2022 48.61 274th 515 46.8%
2023 57.40 277th 786 64.8%
2024 49.29 343rd 804 57.3%
See the entire list of Best California High Schools for Multi-racial Students!

Rank History for English Language Learner students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 95.01 43rd 938 95.4%
2019 77.07 83rd 941 91.2%
2022 69.68 110th 1044 89.5%
2023 32.46 710th 1323 46.3%
2024 57.39 164th 1350 87.9%
See the entire list of Best California High Schools for English Language Learner Students!

Rank History for Special Education students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2023 49.60 476th 1547 69.2%
2024 37.76 761st 1534 50.4%
See the entire list of Best California High Schools for Special Education Students!

Rank History for Low Socio Economic Status students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 68.81 549th 1862 70.5%
2019 74.93 388th 1937 80.0%
2022 78.93 298th 1943 84.7%
2023 76.58 325th 2247 85.5%
2024 80.33 272nd 2235 87.8%
See the entire list of Best California High Schools for Low Socio Economic Status Students!

Rank History for Female students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 79.72 358th 1760 79.7%
2019 82.53 278th 1833 84.8%
2022 80.59 313th 1858 83.2%
2023 78.00 327th 2118 84.6%
2024 78.75 321st 2098 84.7%
See the entire list of Best California High Schools for Female Students!

Rank History for Disabled students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 44.55 462nd 1052 56.1%
2019 43.45 502nd 1117 55.1%
2022 70.05 198th 1161 82.9%
See the entire list of Best California High Schools for Disabled Students!

Rank History for Male students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 85.86 269th 1834 85.3%
2019 79.35 339th 1880 82.0%
2022 80.14 323rd 1916 83.1%
2023 78.53 335th 2207 84.8%
2024 79.18 320th 2172 85.3%
See the entire list of Best California High Schools for Male Students!

Rank History for Asian students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 90.11 20th 581 96.6%
2019 52.94 312th 582 46.4%
2022 78.79 114th 581 80.4%
2023 62.47 306th 731 58.1%
2024 73.45 186th 712 73.9%
See the entire list of Best California High Schools for Asian Students!

Rank History for African American students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 96.46 22nd 582 96.2%
2019 91.75 27th 592 95.4%
2024 53.96 265th 721 63.2%
See the entire list of Best California High Schools for African American Students!

Rank History for Hispanic students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 83.82 250th 1742 85.6%
2019 80.37 261st 1814 85.6%
2022 85.79 181st 1861 90.3%
2023 85.90 162nd 2142 92.4%
2024 85.21 162nd 2125 92.4%
See the entire list of Best California High Schools for Hispanic Students!

Rank History for White students at San Dimas High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 75.47 298th 1173 74.6%
2019 73.35 284th 1222 76.8%
2022 64.96 392nd 1204 67.4%
2023 66.24 358th 1434 75.0%
2024 73.86 247th 1406 82.4%
See the entire list of Best California High Schools for White Students!

Data source: test scores: California Department of Education, rankings: SchoolDigger.com

As you review the school rankings data, please be aware that some of the information from certain demographics is missing. The reason for this omission is that the data has been redacted from the source data itself due to low population samples in these specific demographic groups.

Redacting data from low population samples is a necessary step to ensure the reliability and accuracy of the results, as small sample sizes may not be representative of the broader population. Additionally, this measure helps protect the privacy of individuals belonging to these demographic groups.

San Dimas High Test Scores
Tests: 
  
Grades: 
  
Years: 
  
Group by: 
District Scores:
State Scores:    
  
Subgroup: 






Data source: California Department of Education

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Enrollment information for San Dimas High

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Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1988 870 80 112 218 2 n/a n/a 0 1282
1989 807 79 118 219 4 n/a n/a 0 1227
1990 760 71 127 211 5 n/a n/a 0 1174
1991 749 77 123 241 2 n/a n/a 0 1192
1992 711 75 136 260 3 n/a n/a 0 1185
1993 743 80 140 296 9 n/a n/a 0 1268
1994 786 73 151 308 4 n/a n/a 0 1322
1995 730 89 152 348 4 n/a n/a 0 1323
1996 730 89 152 348 4 n/a n/a 0 1323
1997 711 80 153 366 4 n/a n/a 0 1314
1998 688 79 160 370 7 n/a n/a 0 1304
1999 738 81 165 393 10 n/a n/a 0 1387
2000 748 81 166 394 7 n/a n/a 1 1397
2001 756 81 158 387 11 n/a n/a 11 1404
2002 693 78 150 410 17 n/a n/a 30 1378
2003 693 78 150 410 17 n/a n/a 30 1378
2004 665 77 66 361 9 n/a n/a 247 1425
2005 678 66 76 426 9 n/a n/a 242 1497
2006 640 69 131 448 7 n/a n/a 218 1513
2007 619 58 76 444 7 n/a n/a 286 1490
2008 553 48 78 444 3 n/a n/a 0 1126
2009 492 51 95 428 1 2 275 0 1344
2010 468 48 91 615 3 0 104 0 1329
2011 462 42 102 627 3 0 91 0 1327
2012 458 45 93 605 5 0 90 0 1296
2013 417 42 99 613 5 1 74 0 1251
2014 388 34 101 664 1 0 80 0 1268
2015 397 41 117 710 2 0 96 0 1363
2016 383 35 141 683 2 3 113 0 1360
2017 401 55 134 678 1 0 129 0 1398
2018 358 58 134 714 1 2 108 0 1375
2019 352 55 110 711 6 2 99 0 1335
2020 323 50 107 746 2 0 107 0 1335
2021 296 44 101 774 4 1 115 0 1335
2022 265 33 101 783 3 0 112 0 1297
2023 251 35 111 745 1 2 106 0 1251
2024 236 37 118 755 1 1 100 0 1248

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Enrollment/Ethnicity

For more information about how the Department of Education defines ethnicity, see Defining Race and Ethnicity Data, National Center for Education Statistics

Students eligible for free or discounted lunch at San Dimas High

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 1282 50.7 25.2 n/a
1989 1227 47.9 25.6 n/a
1990 1174 48.2 24.3 n/a
1991 1192 49.6 24.0 n/a
1992 1185 50.4 23.5 14.5
1993 1268 46.3 27.4 18.1
1994 1322 46.0 28.7 19.8
1995 1323 41.3 32.0 20.3
1996 1323 41.3 32.0 20.3
1997 1314 48.8 26.9 20.5
1998 1304 48.8 26.7 18.7
1999 1387 49.2 28.2 20.3
2000 1397 55.4 25.2 19.6
2001 1404 55.2 25.4 17.2
2002 1378 53.4 25.8 21.1
2003 1378 53.4 25.8 21.1
2004 1425 56.2 25.4 20.2
2005 1497 60.0 25.0 19.7
2006 1513 59.8 25.3 20.6
2007 1490 58.8 25.3 21.7
2008 1126 61.3 18.4 20.9
2009 1344 54.5 21.6 16.1
2010 1329 55.6 23.8 19.7
2011 1327 n/a n/a 25.5
2012 1296 50.4 25.7 n/a
2013 1251 48.8 25.6 25.8
2014 1268 48.6 26.0 26.7
2015 1363 52.0 26.2 33.9
2016 1360 52.0 26.1 32.9
2017 1398 54.0 25.8 33
2018 1375 53.4 25.7 38
2019 1335 57.4 23.2 37.1
2020 1335 n/a n/a 38.6
2021 1335 58.2 22.9 38.4
2022 1297 59.5 21.7 36.7
2023 1251 60.5 20.6 33.9
2024 1248 59.5 20.9 32.5

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Students eligible for discounted/free lunch:

The National School Lunch Program (NSLP) provides low-cost or free meals to students in U.S. public and nonprofit private schools based on household income. Those with incomes below 130% of the poverty line receive free lunch, while those between 130% and 185% qualify for reduced-price lunch. The percentage of students receiving free or reduced-price lunch serves as a marker for poverty, as it reflects the socioeconomic status of families in a given school or district. A higher FRPL rate typically indicates a higher concentration of low-income families, suggesting that the school or district may face additional challenges in providing adequate resources and support for student success.

Student/Teacher Ratio San Dimas High

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Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 1282 50.7 25.2 n/a
1989 1227 47.9 25.6 n/a
1990 1174 48.2 24.3 n/a
1991 1192 49.6 24.0 n/a
1992 1185 50.4 23.5 14.5
1993 1268 46.3 27.4 18.1
1994 1322 46.0 28.7 19.8
1995 1323 41.3 32.0 20.3
1996 1323 41.3 32.0 20.3
1997 1314 48.8 26.9 20.5
1998 1304 48.8 26.7 18.7
1999 1387 49.2 28.2 20.3
2000 1397 55.4 25.2 19.6
2001 1404 55.2 25.4 17.2
2002 1378 53.4 25.8 21.1
2003 1378 53.4 25.8 21.1
2004 1425 56.2 25.4 20.2
2005 1497 60.0 25.0 19.7
2006 1513 59.8 25.3 20.6
2007 1490 58.8 25.3 21.7
2008 1126 61.3 18.4 20.9
2009 1344 54.5 21.6 16.1
2010 1329 55.6 23.8 19.7
2011 1327 n/a n/a 25.5
2012 1296 50.4 25.7 n/a
2013 1251 48.8 25.6 25.8
2014 1268 48.6 26.0 26.7
2015 1363 52.0 26.2 33.9
2016 1360 52.0 26.1 32.9
2017 1398 54.0 25.8 33
2018 1375 53.4 25.7 38
2019 1335 57.4 23.2 37.1
2020 1335 n/a n/a 38.6
2021 1335 58.2 22.9 38.4
2022 1297 59.5 21.7 36.7
2023 1251 60.5 20.6 33.9
2024 1248 59.5 20.9 32.5

Data source: National Center for Education Statistics, U.S. Dept of Education.

About Student-Teacher Ratio

Student/teacher ratio is calculated by dividing the total number of students by the total number of full-time equivalent teachers. Please note that a smaller student/teacher ratio does not necessarily translate to smaller class size. In some instances, schools hire teachers part time, and some teachers are hired for specialized instruction with very small class sizes. These and other factors contribute to the student/teacher ratio. Note: For private schools, Student/teacher ratio may not include Pre-Kindergarten.
Pre and Post Pandemic Data

Impact of COVID-19 on San Dimas High

The coronavirus has had a profound impact on education in America. Learning shifted online overnight, attendance numbers dwindled, and enrollment decreased. SchoolDigger.com is making it easier for you to better assess how COVID-19 has impacted your school. Through the collection of pre-pandemic (2019) and current data, SchoolDigger.com is sharing test scores, enrollment numbers and school demographics from schools across the country – and we make it easy to see how impacted schools compare locally and statewide.

Rankings

Rank
Pre-pandemic (2018-2019)
Rank
Post pandemic (2022-2023)
Change (%)
Ranks 302nd of 2133 High schoolsRanks 334th of 2348 High schools
 0.1%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
11th Grade English Language Arts/Literacy (San Dimas High)74.278.3
 4.1%
   11th Grade English Language Arts/Literacy (Bonita Unified)78.278.6
 0.4%
   11th Grade English Language Arts/Literacy (California)57.355.4
 1.9%
11th Grade Mathematics (San Dimas High)37.747.9
 10.2%
   11th Grade Mathematics (Bonita Unified)48.751.6
 3%
   11th Grade Mathematics (California)32.227.4
 4.9%
12th Grade Science (San Dimas High)38.932.2
 6.7%
   12th Grade Science (Bonita Unified)33.933.5
 0.4%
   12th Grade Science (California)25.626.9
 1.3%

Student Body

Number of students
Pre-pandemic (2018-2019)
Number of students
Post pandemic (2022-2023)
Change (%)
Total Students13351251
 6.3%
African American5535
 36.4%
American Indian61
 83.3%
Asian110111
 0.9%
Hispanic711745
 4.8%
Pacific Islander22
White352251
 28.7%
Two or More Races99106
 7.1%
% Free/Discounted Lunch Recipients37.1%33.9%
 3.2%


Schools Near San Dimas High









Frequently Asked Questions about San Dimas High

Students at San Dimas High are 60% Hispanic, 19% White, 9% Asian, 8% Two or more races, 3% African American.

In the 2023-24 school year, 1,248 students attended San Dimas High.

San Dimas High ranks 326th of 2323 California high schools. SchoolDigger rates this school 4 stars out of 5.

San Dimas High is fed by the following schools:

Elementary : Arma J. Shull Elementary
Elementary : Fred Ekstrand Elementary
Elementary : Gladstone Elementary
Middle : Lone Hill Middle


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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.





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