Mt. Diablo High

Summary:

Mt. Diablo High is a public high school located in Concord, California, serving grades 9-12 with a total enrollment of 1,498 students. The school is part of the Mt. Diablo Unified School District, which is ranked 789 out of 1,568 districts in California and has a 2-star rating from SchoolDigger.

Mt. Diablo High consistently underperforms compared to the district and state averages on standardized tests, with only 32.18% of 11th-grade students proficient or better in English Language Arts/Literacy, 10.14% in mathematics, and 11.74% in science. The school's four-year graduation rate has declined from 84.7% in 2020-2021 to 77.7% in 2022-2023, while the dropout rate has increased from 8.2% to 20.1%, significantly higher than the state average. Additionally, the school has experienced a significant increase in chronic absenteeism, rising from 23.7% in 2018-2019 to 40.1% in 2022-2023, much higher than the state average. The school serves a student population with a high percentage of low-socioeconomic status students, with 60.81% qualifying for free or reduced-price lunch in 2022-2023.

When compared to other high schools in the same district, such as Concord High, which is located just 2.61 miles away, Mt. Diablo High generally underperforms. Concord High has significantly higher academic performance, with 44.9% of 11th-grade students proficient or better in English Language Arts/Literacy and 16.6% in mathematics. Concord High also has a much higher four-year graduation rate of 92% and a lower dropout rate of 5.3%. The district also operates several continuation and alternative high schools, such as Prospect High (Continuation) and Olympic Continuation High, which have even lower academic performance, higher dropout rates, and higher chronic absenteeism compared to Mt. Diablo High.


Detail:

Public 9-12

 2450 Grant St.
       Concord, CA  94520-2251


(925) 682-4030

District: Mt. Diablo Unified

SchoolDigger Rank:
1604th of 2,323 California High Schools

Per Pupil Expenditures:  $13,214 Help


Feeder schools for Mt. Diablo High:

Elementary:    Ayers Elementary
    Bel Air Elementary
    Delta View Elementary
    Holbrook Language Academy
    More...
Middle:    Diablo View Middle
    Pine Hollow Middle
    Riverview Middle

Student/teacher ratio:  18.9 Help
Number of students:  1,498

Racial breakdown:

Hispanic:
74.9%
Asian:
8.3%
African American:
6.8%
more

Free/discounted lunch recipients:  60.8% Help


 See top rated California high schools

 Compare Mt. Diablo High to nearby high schools!

Performance Trends
Help
Compare Details Mt. Diablo High ranks worse than 69% of high schools in California. It also ranks 5th among 7 ranked high schools in the Mt. Diablo Unified School District. (See more...)
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Compare Details In 2024 the calculated Average Standard Score was 22.99. (See more...)
Help
The Adjusted Cohort Graduation Rate (ACGR) measures the percentage of Mt. Diablo High freshmen who graduate within four years, adjusting for students who transfer in or out.
Help
The high school dropout rate measures the percentage of students who do not complete their high school education.
Help
Chronic absenteeism in a high 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 (74.9%), Asian (8.3%), African American (6.8%). (See more...)
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Compare Details 60.8% of students are receiving a free or discounted lunch. (See more...)
Teachers
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Compare Details The student/teacher ratio at Mt. Diablo High is 18.9. 4 high schools in the Mt. Diablo Unified School District have better student/teacher ratios. (See more...)
Help
Compare Mt. Diablo High employs 79.1 full-time teachers.
Finance
Help
Compare Details The average total spent per student at Mt. Diablo High is $13,214. 5 high schools in the Mt. Diablo Unified School District spend more per student.
Schooldigger 2024 Rankings:

Mt. Diablo High:

SchoolDigger ranks Mt. Diablo High 1604th of 2323 California public high schools. (See Mt. Diablo 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:


Mt. Diablo Unified:

SchoolDigger ranks Mt. Diablo Unified 789th of 1568 California school districts. (See district ranking list.)


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Rank History for Mt. Diablo High

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Compare

Rank History for all students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2004 28.48 973rd 1653 41.1%
2005 36.41 890th 1901 53.2%
2006 32.25 1034th 1968 47.5%
2007 28.34 1178th 2063 42.9%
2008 30.00 1167th 2117 44.9%
2009 31.86 1306th 2238 41.6%
2010 33.98 1164th 2281 49.0%
2011 32.33 1249th 2367 47.2%
2012 26.64 1402nd 2354 40.4%
2013 29.95 1327th 2426 45.3%
2015 31.35 1320th 1994 33.8%
2016 31.90 1334th 2039 34.6%
2017 41.90 1207th 2021 40.3%
2018 51.54 982nd 2017 51.3%
2019 28.80 1456th 2133 31.7%
2021 40.33 759th 1290 41.2%
2022 23.35 1580th 2123 25.6%
2023 28.49 1459th 2348 37.9%
2024 22.99 1604th 2323 31.0%
See the entire list of California High School Rankings!

Rank History for Multi-racial students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2024 3.15 782nd 804 2.7%
See the entire list of Best California High Schools for Multi-racial Students!

Rank History for English Language Learner students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 43.23 389th 938 58.5%
2019 40.56 440th 941 53.2%
2021 53.30 159th 467 66.0%
2022 30.30 814th 1044 22.0%
2023 37.11 546th 1323 58.7%
2024 31.27 784th 1350 41.9%
See the entire list of Best California High Schools for English Language Learner Students!

Rank History for Special Education students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2023 32.10 916th 1547 40.8%
2024 29.75 981st 1534 36.0%
See the entire list of Best California High Schools for Special Education Students!

Rank History for Low Socio Economic Status students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 55.65 816th 1862 56.2%
2019 24.08 1427th 1937 26.3%
2021 42.57 667th 1126 40.8%
2022 24.68 1450th 1943 25.4%
2023 31.78 1369th 2247 39.1%
2024 24.48 1547th 2235 30.8%
See the entire list of Best California High Schools for Low Socio Economic Status Students!

Rank History for Homeless students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2023 12.54 397th 417 4.8%
See the entire list of Best California High Schools for Homeless Students!

Rank History for Female students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 38.96 1135th 1760 35.5%
2019 23.56 1395th 1833 23.9%
2021 40.24 621st 1054 41.1%
2022 23.74 1421st 1858 23.5%
2023 27.54 1390th 2118 34.4%
2024 18.42 1625th 2098 22.5%
See the entire list of Best California High Schools for Female Students!

Rank History for Disabled students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 21.85 904th 1052 14.1%
2019 32.50 705th 1117 36.9%
2022 27.44 900th 1161 22.5%
See the entire list of Best California High Schools for Disabled Students!

Rank History for Male students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 58.80 741st 1834 59.6%
2019 31.32 1256th 1880 33.2%
2021 32.69 761st 1122 32.2%
2022 19.96 1504th 1916 21.5%
2023 27.65 1401st 2207 36.5%
2024 25.47 1450th 2172 33.2%
See the entire list of Best California High Schools for Male Students!

Rank History for Asian students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 21.44 474th 581 18.4%
2019 10.51 529th 582 9.1%
2022 5.70 549th 581 5.5%
2023 15.85 631st 731 13.7%
2024 7.89 658th 712 7.6%
See the entire list of Best California High Schools for Asian Students!

Rank History for African American students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 40.16 332nd 582 43.0%
2019 20.97 474th 592 19.9%
2022 20.39 439th 522 15.9%
2023 24.47 549th 720 23.8%
2024 49.68 293rd 721 59.4%
See the entire list of Best California High Schools for African American Students!

Rank History for Hispanic students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 52.64 852nd 1742 51.1%
2019 21.40 1383rd 1814 23.8%
2022 25.46 1395th 1861 25.0%
2023 33.72 1280th 2142 40.2%
2024 24.14 1488th 2125 30.0%
See the entire list of Best California High Schools for Hispanic Students!

Rank History for White students at Mt. Diablo High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 36.99 788th 1173 32.8%
2019 23.34 961st 1222 21.4%
2022 8.37 1114th 1204 7.5%
2023 15.35 1159th 1434 19.2%
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.

Mt. Diablo 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 Mt. Diablo High

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Compare
Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1988 881 104 169 202 7 n/a n/a 0 1363
1989 785 127 193 211 9 n/a n/a 0 1325
1990 722 133 182 254 6 n/a n/a 0 1297
1991 727 105 193 263 5 n/a n/a 0 1293
1992 581 125 203 294 3 n/a n/a 0 1206
1993 532 137 192 301 2 n/a n/a 0 1164
1994 480 130 197 324 1 n/a n/a 0 1132
1995 467 138 167 377 0 n/a n/a 0 1149
1996 467 138 167 377 0 n/a n/a 0 1149
1997 480 150 174 420 2 n/a n/a 0 1226
1998 462 158 182 439 0 n/a n/a 0 1241
1999 423 192 200 465 3 n/a n/a 0 1283
2000 496 177 237 527 2 n/a n/a 0 1439
2001 516 209 252 591 1 n/a n/a 0 1569
2002 488 218 286 675 4 n/a n/a 0 1671
2003 488 218 286 675 4 n/a n/a 0 1671
2004 461 205 266 685 7 n/a n/a 0 1624
2005 407 223 260 714 11 n/a n/a 0 1615
2006 433 241 245 769 10 n/a n/a 0 1698
2007 411 227 239 785 9 n/a n/a 1 1672
2008 388 233 256 915 10 n/a n/a 0 1802
2009 296 225 204 878 13 46 8 0 1670
2010 249 195 209 905 8 31 13 0 1610
2011 226 183 180 884 6 27 23 0 1529
2012 231 165 174 850 8 27 26 0 1481
2013 223 129 154 799 9 30 28 0 1372
2014 189 102 143 812 8 32 23 0 1309
2015 162 108 132 889 2 32 27 0 1352
2016 109 124 128 871 1 31 43 0 1307
2017 121 132 160 863 4 26 38 0 1344
2018 108 116 168 923 1 26 50 0 1392
2019 100 117 176 974 2 17 62 0 1448
2020 97 107 190 1072 1 17 56 0 1540
2021 67 106 184 1123 0 20 67 0 1567
2022 53 112 163 1115 0 19 51 0 1513
2023 55 102 125 1122 0 17 76 1 1498

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 Mt. Diablo High

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 1363 65.5 20.8 n/a
1989 1325 60.4 21.9 n/a
1990 1297 62.0 20.9 n/a
1991 1293 56.9 22.7 n/a
1992 1206 57.8 20.8 33.3
1993 1164 47.8 24.4 35.8
1994 1132 52.8 21.4 41.8
1995 1149 58.6 19.6 53.6
1996 1149 58.6 19.6 53.6
1997 1226 55.5 22.1 52.2
1998 1241 59.2 21.0 53.7
1999 1283 60.0 21.4 54.7
2000 1439 65.5 22.0 50.2
2001 1569 75.0 20.9 44.6
2002 1671 72.7 23.0 42.4
2003 1671 72.7 23.0 42.4
2004 1624 85.7 18.9 39.2
2005 1615 85.7 18.8 44.7
2006 1698 67.6 25.1 0
2007 1672 77.4 21.6 51.2
2008 1802 91.8 19.6 56.3
2009 1670 90.2 16.9 62.5
2010 1610 93.8 17.1 51.3
2011 1529 n/a n/a 50.4
2012 1481 89.3 16.5 n/a
2013 1372 91.0 15.0 76.2
2014 1309 80.0 16.3 78.5
2015 1352 77.0 17.5 77.4
2016 1307 67.0 19.5 75.2
2017 1344 72.2 18.6 74.2
2018 1392 64.8 21.4 76
2019 1448 72.4 20.0 79.8
2020 1540 n/a n/a 70.8
2021 1567 77.5 20.2 65.7
2022 1513 77.3 19.5 75.7
2023 1498 79.1 18.9 60.8

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 Mt. Diablo High

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 1363 65.5 20.8 n/a
1989 1325 60.4 21.9 n/a
1990 1297 62.0 20.9 n/a
1991 1293 56.9 22.7 n/a
1992 1206 57.8 20.8 33.3
1993 1164 47.8 24.4 35.8
1994 1132 52.8 21.4 41.8
1995 1149 58.6 19.6 53.6
1996 1149 58.6 19.6 53.6
1997 1226 55.5 22.1 52.2
1998 1241 59.2 21.0 53.7
1999 1283 60.0 21.4 54.7
2000 1439 65.5 22.0 50.2
2001 1569 75.0 20.9 44.6
2002 1671 72.7 23.0 42.4
2003 1671 72.7 23.0 42.4
2004 1624 85.7 18.9 39.2
2005 1615 85.7 18.8 44.7
2006 1698 67.6 25.1 0
2007 1672 77.4 21.6 51.2
2008 1802 91.8 19.6 56.3
2009 1670 90.2 16.9 62.5
2010 1610 93.8 17.1 51.3
2011 1529 n/a n/a 50.4
2012 1481 89.3 16.5 n/a
2013 1372 91.0 15.0 76.2
2014 1309 80.0 16.3 78.5
2015 1352 77.0 17.5 77.4
2016 1307 67.0 19.5 75.2
2017 1344 72.2 18.6 74.2
2018 1392 64.8 21.4 76
2019 1448 72.4 20.0 79.8
2020 1540 n/a n/a 70.8
2021 1567 77.5 20.2 65.7
2022 1513 77.3 19.5 75.7
2023 1498 79.1 18.9 60.8

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.
Finances

Per Pupil Expenditures for Mt. Diablo High

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YearTotal Expenditures Per Pupil
2018 $13,214

Data source: California Department of Education
Pre and Post Pandemic Data

Impact of COVID-19 on Mt. Diablo 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 1456th of 2133 High schoolsRanks 1459th of 2348 High schools
 6.1%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
11th Grade English Language Arts/Literacy (Mt. Diablo High)36.537.8
 1.3%
   11th Grade English Language Arts/Literacy (Mt. Diablo Unified)54.653.8
 0.8%
   11th Grade English Language Arts/Literacy (California)57.355.4
 1.9%
11th Grade Mathematics (Mt. Diablo High)14.612.8
 1.8%
   11th Grade Mathematics (Mt. Diablo Unified)32.827.8
 5%
   11th Grade Mathematics (California)32.227.4
 4.9%
11th Grade Science (Mt. Diablo High)7.912.9
 5%
   11th Grade Science (Mt. Diablo Unified)27.335.1
 7.8%
   11th Grade Science (California)30.431.7
 1.3%
12th Grade Science (Mt. Diablo High)12.15.6
 6.5%
   12th Grade Science (Mt. Diablo Unified)23.330.5
 7.2%
   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 Students14481498
 3.5%
African American117102
 12.8%
American Indian20
 100%
Asian176125
 29%
Hispanic9741122
 15.2%
Pacific Islander1717
White10055
 45%
Two or More Races6276
 22.6%
% Free/Discounted Lunch Recipients79.8%60.8%
 19%


Schools Near Mt. Diablo High









Frequently Asked Questions about Mt. Diablo High

In the 2022-23 school year, 1,498 students attended Mt. Diablo High.

Mt. Diablo High is fed by the following schools:

Elementary : Ayers Elementary
Elementary : Bel Air Elementary
Elementary : Delta View Elementary
Elementary : Holbrook Language Academy
Elementary : Meadow Homes Elementary
Elementary : Mt. Diablo Elementary
Elementary : Rio Vista Elementary
Elementary : Shore Acres Elementary
Elementary : Silverwood Elementary
Elementary : Sun Terrace Elementary
Middle : Diablo View Middle
Middle : Pine Hollow Middle
Middle : Riverview Middle

Students at Mt. Diablo High are 75% Hispanic, 8% Asian, 7% African American, 5% Two or more races, 4% White, 1% Pacific Islander.

Mt. Diablo High ranks 1604th of 2323 California high schools. SchoolDigger rates this school 2 stars out of 5.


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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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