Rio Mesa High

Summary:

Rio Mesa High is a public high school located in Oxnard, California, serving grades 9-12 with a total enrollment of 2,220 students. It is part of the Oxnard Union High School District, which is ranked 717 out of 1,568 districts in California and has a 3-star rating from SchoolDigger.

Rio Mesa High has seen fluctuations in its statewide ranking, ranging from 560 out of 2,426 California high schools in 2012-2013 (4-star rating) to 1,318 out of 2,123 in 2021-2022 (2-star rating). Its current ranking for 2023-2024 is 1,089 out of 2,323 schools, with a 3-star rating. The school's performance varies across different student subgroups, with a 4-star rating for African American students, a 3-star rating for Hispanic and White students, but only a 1-star rating for Asian, Multi-racial, and Migrant students. Rio Mesa High's four-year graduation rates have ranged from 85.0% in 2020-2021 to 91.9% in 2021-2022, while its dropout rate has decreased from 7.6% in 2018-2019 to 5.6% in 2022-2023. However, the school has experienced a significant increase in chronic absenteeism, from 12.2% in 2017-2018 to 30.8% in 2021-2022, before decreasing to 24.6% in 2022-2023.

When compared to other high schools in the Oxnard Union High School District, Rio Mesa High generally performs on par or slightly below the district average, but outperforms the lower-ranked Frontier High and Condor High. The school has shown a notable improvement in the performance of its English Language Learner (ELL) students, with a 4-star rating in 2022-2023, up from a 2-star rating in 2021-2022. However, its performance for students with disabilities and those from low socioeconomic backgrounds is relatively lower, with 2-star ratings in these subgroups.


Detail:

Public 9-12

 545 Central Ave.
       Oxnard, CA  93036-1045


(805) 278-5500

District: Oxnard Union High

SchoolDigger Rank:
1089th of 2,323 California High Schools

Per Pupil Expenditures:  $10,776 Help


Feeder schools for Rio Mesa High:

Elementary:    Camarillo Heights STEM Academy
    Las Posas Elementary
    Mesa Elementary
    Rio Del Mar
    More...
Middle:    Rio del Valle Middle
    Rio Vista Middle

Student/teacher ratio:  23.8 Help
Number of students:  2,078

Racial breakdown:

Hispanic:
86.1%
Asian:
4.8%
White:
4.5%
more

Free/discounted lunch recipients:  65.3% Help


 See top rated California high schools

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Performance Trends
Help
Compare Details Rio Mesa High ranks better than 53.1% of high schools in California. It also ranks 3rd among 9 ranked high schools in the Oxnard Union High School District. (See more...)
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Compare Details In 2024 the calculated Average Standard Score was 41.49. (See more...)
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The four-year cohort graduation rate measures the percentage of students at Rio Mesa High who earn a standard high school diploma within four years of starting ninth grade.
Help
The high school dropout rate measures the percentage of students who do not complete their high school education.
Help
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 (86.1%), Asian (4.8%), White (4.5%). (See more...)
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Compare Details 65.3% of students are receiving a free or discounted lunch. (See more...)
Teachers
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Compare Details The student/teacher ratio at Rio Mesa High is 23.8. 4 high schools in the Oxnard Union High School District have better student/teacher ratios. (See more...)
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Compare Rio Mesa High employs 87.1 full-time teachers.
Finance
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Compare Details The average total spent per student at Rio Mesa High is $10,776, which is the 3rd highest among 9 high schools in the Oxnard Union High School District.
Schooldigger 2024 Rankings:

Rio Mesa High:

SchoolDigger ranks Rio Mesa High 1089th of 2323 California public high schools. (See Rio Mesa 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:
Migrant students:
Homeless students:
Female students:
Male students:
Hispanic students:
White students:


Oxnard Union High:

SchoolDigger ranks Oxnard Union High 717th of 1568 California school districts. (See district ranking list.)


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Rank History for Rio Mesa High

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Compare

Rank History for all students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2004 61.13 324th 1653 80.4%
2005 60.18 410th 1901 78.4%
2006 64.00 386th 1968 80.4%
2007 48.57 690th 2063 66.6%
2008 55.15 566th 2117 73.3%
2009 62.11 406th 2238 81.9%
2010 60.15 516th 2281 77.4%
2011 58.62 566th 2367 76.1%
2012 62.37 480th 2354 79.6%
2013 58.90 560th 2426 76.9%
2015 55.96 853rd 1994 57.2%
2016 55.98 879th 2039 56.9%
2017 47.76 1077th 2021 46.7%
2018 44.19 1140th 2017 43.5%
2019 46.01 1078th 2133 49.5%
2021 47.15 644th 1290 50.1%
2022 34.44 1318th 2123 37.9%
2023 40.63 1118th 2348 52.4%
2024 41.49 1089th 2323 53.1%
See the entire list of California High School Rankings!

Rank History for Multi-racial students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 74.39 92nd 366 74.9%
2022 31.63 375th 515 27.2%
2023 34.54 458th 786 41.7%
2024 40.40 423rd 804 47.4%
See the entire list of Best California High Schools for Multi-racial Students!

Rank History for English Language Learner students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 25.40 739th 938 21.2%
2019 30.04 769th 941 18.3%
2021 33.77 301st 467 35.5%
2022 36.94 622nd 1044 40.4%
2023 52.23 232nd 1323 82.5%
2024 32.95 714th 1350 47.1%
See the entire list of Best California High Schools for English Language Learner Students!

Rank History for Special Education students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2023 25.23 1161st 1547 25.0%
2024 32.82 894th 1534 41.7%
See the entire list of Best California High Schools for Special Education Students!

Rank History for Low Socio Economic Status students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 36.36 1218th 1862 34.6%
2019 41.67 1132nd 1937 41.6%
2021 47.48 581st 1126 48.4%
2022 36.65 1209th 1943 37.8%
2023 40.06 1133rd 2247 49.6%
2024 45.07 975th 2235 56.4%
See the entire list of Best California High Schools for Low Socio Economic Status Students!

Rank History for Migrant students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2023 26.19 75th 89 15.7%
2024 27.04 83rd 100 17.0%
See the entire list of Best California High Schools for Migrant Students!

Rank History for Homeless students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2022 15.59 262nd 290 9.7%
2023 26.24 312th 417 25.2%
2024 46.18 243rd 451 46.1%
See the entire list of Best California High Schools for Homeless Students!

Rank History for Female students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 36.84 1168th 1760 33.6%
2019 44.48 981st 1833 46.5%
2021 43.99 579th 1054 45.1%
2022 33.43 1197th 1858 35.6%
2023 36.93 1175th 2118 44.5%
2024 43.94 975th 2098 53.5%
See the entire list of Best California High Schools for Female Students!

Rank History for Disabled students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 39.40 545th 1052 48.2%
2019 44.54 489th 1117 56.2%
2021 36.67 321st 555 42.2%
2022 28.31 875th 1161 24.6%
See the entire list of Best California High Schools for Disabled Students!

Rank History for Male students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 45.15 1002nd 1834 45.4%
2019 40.69 1070th 1880 43.1%
2021 41.36 634th 1122 43.5%
2022 31.34 1264th 1916 34.0%
2023 41.80 1006th 2207 54.4%
2024 36.76 1134th 2172 47.8%
See the entire list of Best California High Schools for Male Students!

Rank History for Asian students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 30.29 426th 581 26.7%
See the entire list of Best California High Schools for Asian Students!

Rank History for African American students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2019 64.12 160th 592 73.0%
2023 73.39 136th 720 81.1%
See the entire list of Best California High Schools for African American Students!

Rank History for Hispanic students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 39.50 1108th 1742 36.4%
2019 42.59 1049th 1814 42.2%
2022 35.51 1191st 1861 36.0%
2023 43.21 1023rd 2142 52.2%
2024 45.57 956th 2125 55.0%
See the entire list of Best California High Schools for Hispanic Students!

Rank History for White students at Rio Mesa High

Year Avg Standard Score Statewide Rank Total # Ranked High Schools CA State Percentile SchoolDigger Rating
2018 66.54 432nd 1173 63.2%
2019 57.00 521st 1222 57.4%
2022 38.60 737th 1204 38.8%
2023 34.96 842nd 1434 41.3%
2024 53.63 530th 1406 62.3%
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.

Rio Mesa 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 Rio Mesa High

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Compare
Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1988 987 42 69 813 33 n/a n/a 0 1944
1989 864 49 89 799 28 n/a n/a 0 1829
1990 727 39 81 833 26 n/a n/a 0 1706
1991 656 44 101 974 34 n/a n/a 0 1809
1992 647 48 116 1092 22 n/a n/a 0 1925
1993 642 41 119 1202 25 n/a n/a 0 2029
1994 647 57 127 1335 23 n/a n/a 0 2189
1995 551 76 110 1409 23 n/a n/a 0 2169
1996 551 76 110 1409 23 n/a n/a 0 2169
1997 593 87 126 1664 25 n/a n/a 0 2495
1998 594 104 143 1646 26 n/a n/a 0 2513
1999 597 85 137 1594 25 n/a n/a 0 2438
2000 604 80 155 1668 29 n/a n/a 0 2536
2001 619 79 166 1533 40 n/a n/a 0 2437
2002 680 77 122 1282 34 n/a n/a 1 2196
2003 680 77 122 1282 34 n/a n/a 1 2196
2004 697 61 120 1158 25 n/a n/a 2 2063
2005 643 77 139 1211 25 n/a n/a 3 2098
2006 632 82 146 1298 23 n/a n/a 26 2207
2007 624 80 149 1362 21 n/a n/a 42 2278
2008 579 85 144 1401 16 n/a n/a 0 2225
2009 622 88 131 1412 16 10 23 0 2302
2010 536 80 131 1426 13 8 11 0 2205
2011 515 87 120 1399 7 7 7 0 2142
2012 458 82 109 1365 8 4 8 0 2034
2013 412 90 110 1427 9 5 8 0 2061
2014 383 81 104 1520 11 7 23 0 2129
2015 353 79 121 1590 9 10 35 0 2197
2016 311 72 127 1614 7 13 39 0 2183
2017 274 53 142 1645 7 13 44 0 2178
2018 246 54 152 1710 4 3 43 0 2212
2019 193 55 138 1789 4 8 42 0 2229
2020 180 62 131 1838 0 8 50 0 2269
2021 147 54 133 1977 0 6 63 1 2381
2022 129 42 98 1992 0 8 58 6 2333
2023 113 45 106 1897 1 2 50 6 2220
2024 94 37 99 1789 0 1 48 10 2078

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 Rio Mesa High

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 1944 78.5 24.7 n/a
1989 1829 73.6 24.8 n/a
1990 1706 74.5 22.8 n/a
1991 1809 72.4 24.9 n/a
1992 1925 73.6 26.1 36.3
1993 2029 76.0 26.7 37.6
1994 2189 87.1 25.1 47.8
1995 2169 87.3 24.8 49.8
1996 2169 87.3 24.8 49.8
1997 2495 94.3 26.5 46.7
1998 2513 98.2 25.6 42.6
1999 2438 96.0 25.4 44.4
2000 2536 97.6 26.0 43.3
2001 2437 98.0 24.9 42.3
2002 2196 92.8 23.7 36.2
2003 2196 92.8 23.7 36.2
2004 2063 85.5 24.1 27.5
2005 2098 88.5 23.7 27.7
2006 2207 91.5 24.1 38.9
2007 2278 89.1 25.6 35.6
2008 2225 111.2 20.0 37.8
2009 2302 93.4 20.6 37.9
2010 2205 89.6 24.6 43.9
2011 2142 n/a n/a 37.3
2012 2034 85.2 23.8 n/a
2013 2061 84.0 24.5 51.7
2014 2129 85.4 24.9 50.7
2015 2197 87.0 25.2 54.3
2016 2183 83.0 26.3 51.9
2017 2178 88.8 24.5 60.5
2018 2212 89.9 24.5 63.3
2019 2229 97.2 22.9 63.8
2020 2269 n/a n/a 61.9
2021 2381 98.0 24.2 63.5
2022 2333 98.8 23.6 60.7
2023 2220 94.8 23.4 60.3
2024 2078 87.1 23.8 65.3

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 Rio Mesa High

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 1944 78.5 24.7 n/a
1989 1829 73.6 24.8 n/a
1990 1706 74.5 22.8 n/a
1991 1809 72.4 24.9 n/a
1992 1925 73.6 26.1 36.3
1993 2029 76.0 26.7 37.6
1994 2189 87.1 25.1 47.8
1995 2169 87.3 24.8 49.8
1996 2169 87.3 24.8 49.8
1997 2495 94.3 26.5 46.7
1998 2513 98.2 25.6 42.6
1999 2438 96.0 25.4 44.4
2000 2536 97.6 26.0 43.3
2001 2437 98.0 24.9 42.3
2002 2196 92.8 23.7 36.2
2003 2196 92.8 23.7 36.2
2004 2063 85.5 24.1 27.5
2005 2098 88.5 23.7 27.7
2006 2207 91.5 24.1 38.9
2007 2278 89.1 25.6 35.6
2008 2225 111.2 20.0 37.8
2009 2302 93.4 20.6 37.9
2010 2205 89.6 24.6 43.9
2011 2142 n/a n/a 37.3
2012 2034 85.2 23.8 n/a
2013 2061 84.0 24.5 51.7
2014 2129 85.4 24.9 50.7
2015 2197 87.0 25.2 54.3
2016 2183 83.0 26.3 51.9
2017 2178 88.8 24.5 60.5
2018 2212 89.9 24.5 63.3
2019 2229 97.2 22.9 63.8
2020 2269 n/a n/a 61.9
2021 2381 98.0 24.2 63.5
2022 2333 98.8 23.6 60.7
2023 2220 94.8 23.4 60.3
2024 2078 87.1 23.8 65.3

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 Rio Mesa High

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YearTotal Expenditures Per Pupil
2018 $10,776

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

Impact of COVID-19 on Rio Mesa 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 1078th of 2133 High schoolsRanks 1118th of 2348 High schools
 2.9%

Test Scores

% proficient
Pre-pandemic (2018-2019)
% proficient
Post pandemic (2022-2023)
Change (%)
11th Grade English Language Arts/Literacy (Rio Mesa High)47.149.9
 2.8%
   11th Grade English Language Arts/Literacy (Oxnard Union High)40.642.2
 1.6%
   11th Grade English Language Arts/Literacy (California)57.355.4
 1.9%
11th Grade Mathematics (Rio Mesa High)2415.8
 8.1%
   11th Grade Mathematics (Oxnard Union High)21.315
 6.3%
   11th Grade Mathematics (California)32.227.4
 4.9%
12th Grade Science (Rio Mesa High)13.314.8
 1.5%
   12th Grade Science (Oxnard Union High)18.118.2
 0.1%
   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 Students22292220
 0.4%
African American5545
 18.2%
American Indian41
 75%
Asian138106
 23.2%
Hispanic17891897
 6%
Pacific Islander82
 75%
White193113
 41.5%
Two or More Races4250
 19%
% Free/Discounted Lunch Recipients63.8%60.3%
 3.5%


Schools Near Rio Mesa High









Frequently Asked Questions about Rio Mesa High

In the 2023-24 school year, 2,078 students attended Rio Mesa High.

Rio Mesa High ranks 1089th of 2323 California high schools. SchoolDigger rates this school 3 stars out of 5.

Students at Rio Mesa High are 86% Hispanic, 5% Asian, 5% White, 2% Two or more races, 2% African American.

Rio Mesa High is fed by the following schools:

Elementary : Camarillo Heights STEM Academy
Elementary : Las Posas Elementary
Elementary : Mesa Elementary
Elementary : Rio Del Mar
Elementary : Rio del Norte
Elementary : Rio Lindo Elementary
Elementary : Rio Plaza Elementary
Elementary : Rio Rosales
Middle : Rio del Valle Middle
Middle : Rio Vista 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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