Mary C O'Brien Elementary School

Summary:

Mary C O'Brien Elementary School is a public elementary school located in Casa Grande, Arizona, serving grades K-6 with a total enrollment of 120 students. The school is part of the Mary C O'Brien Accommodation District, which is ranked 6th out of 288 districts in Arizona and has a 5-star rating from SchoolDigger.

Mary C O'Brien Elementary School consistently delivers outstanding academic results, earning top rankings and ratings within the state of Arizona. The school has a high percentage of students proficient or better in English Language Arts and Mathematics across all grade levels, significantly outperforming the state averages. For example, in the 2023-2024 school year, 88% of 4th graders, 78% of 5th graders, and 86% of 6th graders were proficient or better in ELA, compared to the state averages of 46%, 38%, and 43%, respectively. In Mathematics, the school had 95% of 3rd graders, 88% of 4th graders, and 67% of 5th graders proficient or better, far exceeding the state averages of 43%, 36%, and 33%. This consistent high performance has earned the school a ranking of 14th out of 904 Arizona elementary schools, with a 5-star rating from SchoolDigger.

The school's exceptional academic environment is further highlighted when compared to the nearby schools. For instance, in the 2023-2024 school year, Mary C O'Brien Elementary School's 4th grade ELA proficiency rate of 88% was more than double the rates of the nearby schools, which ranged from 28% to 42%. This stark contrast demonstrates the school's commitment to providing a high-quality education for its diverse student population, which includes 34.17% White, 51.67% Hispanic, and 9.17% two or more races.


Detail:

Public K-6

 1400 N Eleven Mile Corner Rd
       Casa Grande, AZ  85194-9187


(520) 450-4400

District: Mary C O'Brien Accommodation District

SchoolDigger Rank:
14th of 904 Arizona Elementary Schools

Per Pupil Expenditures:  $22,613 Help


Student/teacher ratio:  10.4 Help
Number of students:  120

Racial breakdown:

Hispanic:
51.7%
White:
34.2%
Two or more races:
9.2%
more

Free/discounted lunch recipients:  61.7% Help


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Performance Trends
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Compare Details Mary C O'Brien Elementary School ranks better than 98.5% of elementary schools in Arizona. (See more...)
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Compare Details In 2024 the calculated Average Standard Score was 97.37. (See more...)
Student Body
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Compare Details Racial makeup is: Hispanic (51.7%), White (34.2%), two or more races (9.2%). (See more...)
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Compare Details 61.7% of students are receiving a free or discounted lunch. (See more...)
Teachers
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Compare Details The student/teacher ratio at Mary C O'Brien Elementary School is 10.4. (See more...)
Help
Compare Mary C O'Brien Elementary School employs 11.5 full-time teachers.
Finance
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Compare Details The average total spent per student at Mary C O'Brien Elementary School is $22,613.
Schooldigger Rankings:

Mary C O'Brien Elementary School was not ranked this year due to insufficient test score data.

Mary C O'Brien Accommodation District:

SchoolDigger ranks Mary C O'Brien Accommodation District 6th of 288 Arizona school districts. (See district ranking list.)


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Rank History for Mary C O'Brien Elementary School

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Rank History for all students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2009 83.29 148th 1062 86.1%
2010 73.71 280th 1090 74.3%
2011 66.86 355th 1075 67.0%
2012 80.28 193rd 1141 83.1%
2013 80.26 178th 1158 84.6%
2014 86.18 126th 1079 88.3%
2016 74.85 261st 1079 75.8%
2017 89.72 96th 1106 91.3%
2018 91.47 84th 1109 92.4%
2021 92.75 79th 1226 93.6%
2022 92.98 36th 1000 96.4%
2023 95.63 41st 1245 96.7%
2024 97.37 14th 904 98.5%
See the entire list of Arizona Elementary School Rankings!

Rank History for Multi-racial students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 39.38 619th 1027 39.7%
See the entire list of Best Arizona Elementary Schools for Multi-racial Students!

Rank History for Special Education students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 78.07 79th 1201 93.4%
2022 67.36 55th 145 62.1%
See the entire list of Best Arizona Elementary Schools for Special Education Students!

Rank History for Female students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 79.82 227th 1219 81.4%
2022 82.87 78th 824 90.5%
2023 89.00 98th 1219 92.0%
See the entire list of Best Arizona Elementary Schools for Female Students!

Rank History for Male students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 95.31 35th 1220 97.1%
2022 81.81 103rd 830 87.6%
2023 96.89 20th 1216 98.4%
See the entire list of Best Arizona Elementary Schools for Male Students!

Rank History for Hispanic students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2018 96.06 19th 911 97.9%
2021 94.93 26th 1198 97.8%
2022 84.83 69th 716 90.4%
2023 89.20 66th 1170 94.4%
See the entire list of Best Arizona Elementary Schools for Hispanic Students!

Rank History for Native American students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 29.56 484th 654 26.0%
See the entire list of Best Arizona Elementary Schools for Native American Students!

Rank History for Pacific Islander students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 93.45 2nd 171 98.8%
See the entire list of Best Arizona Elementary Schools for Pacific Islander Students!

Rank History for White students at Mary C O'Brien Elementary School

Year Avg Standard Score Statewide Rank Total # Ranked Elementary Schools AZ State Percentile SchoolDigger Rating
2021 94.30 8th 1161 99.3%
2022 69.88 178th 800 77.8%
2023 82.34 124th 1024 87.9%
See the entire list of Best Arizona Elementary Schools for White Students!

Data source: test scores: Arizona 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.

Mary C O'Brien Elementary School Test Scores
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Data source: Arizona Department of Education

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Enrollment information for Mary C O'Brien Elementary School

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Year White African American Asian Hispanic American Indian Pacific Islander Two or More Races Not Specified Total
1988 15 0 1 26 7 n/a n/a -12 37
1989 15 2 0 27 2 n/a n/a 28 74
1990 18 6 n/a 54 4 n/a n/a -20 62
1991 14 9 0 39 1 n/a n/a 21 84
1992 21 5 0 61 1 n/a n/a 0 88
1993 19 1 0 36 6 n/a n/a 0 62
1994 20 8 0 41 4 n/a n/a 0 73
1995 18 5 0 47 3 n/a n/a 0 73
1996 18 5 0 47 3 n/a n/a 0 73
1997 13 3 0 44 1 n/a n/a 0 61
1998 14 2 0 52 1 n/a n/a 0 69
1999 12 3 0 44 1 n/a n/a 0 60
2000 17 0 0 65 2 n/a n/a 0 84
2001 20 3 0 68 3 n/a n/a 0 94
2002 26 7 0 61 7 n/a n/a 0 101
2003 26 7 0 61 7 n/a n/a 0 101
2004 27 6 0 71 7 n/a n/a 0 111
2005 29 10 0 81 5 n/a n/a 0 125
2006 36 6 0 67 6 n/a n/a 0 115
2007 46 6 2 60 5 n/a n/a 0 119
2008 47 6 2 64 3 n/a n/a 0 122
2009 48 5 1 62 3 n/a n/a 0 119
2010 54 5 0 59 3 n/a n/a 0 121
2011 35 2 0 89 2 0 1 0 129
2012 27 4 0 92 1 0 1 0 125
2013 28 5 0 81 1 0 4 0 119
2014 26 3 1 82 1 0 3 0 116
2015 32 3 2 79 5 0 2 0 123
2016 33 3 2 74 3 0 3 0 118
2017 37 2 2 71 3 0 2 0 117
2018 38 1 1 67 2 2 2 0 113
2019 44 2 1 69 2 3 5 0 126
2020 52 2 0 56 5 3 7 0 125
2021 39 2 0 60 3 3 10 0 117
2022 44 1 0 58 0 4 11 0 118
2023 41 2 0 62 0 4 11 0 120

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 Mary C O'Brien Elementary School

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 37 2.0 18.5 n/a
1989 74 3.0 24.6 n/a
1990 62 3.0 20.6 n/a
1991 84 4.0 21.0 n/a
1992 88 4.0 22.0 n/a
1993 62 4.0 15.5 n/a
1994 73 4.0 18.3 n/a
1995 73 4.5 16.2 n/a
1996 73 4.5 16.2 n/a
1997 61 6.0 10.2 n/a
1998 69 4.5 15.3 n/a
1999 60 4.5 13.3 n/a
2000 84 5.5 15.3 n/a
2001 94 6.5 14.5 n/a
2002 101 9.5 10.6 n/a
2003 101 9.5 10.6 n/a
2004 111 9.5 11.7 n/a
2005 125 10.5 11.9 95.2
2006 115 10.5 11.0 97.4
2007 119 10.5 11.3 58.8
2008 122 10.0 12.2 97.5
2009 119 10.8 11.0 97.5
2010 121 9.7 12.4 97.5
2011 129 9.7 13.2 97.7
2012 125 10.8 11.5 97.6
2013 119 10.8 11.0 97.5
2014 116 11.8 9.8 97.4
2015 123 12.0 10.2 0
2016 118 11.0 10.7 97.5
2017 117 10.8 10.8 97.4
2018 113 10.0 11.3 61.1
2019 126 11.0 11.4 n/a
2020 125 11.0 11.3 61.6
2021 117 11.7 10.0 n/a
2022 118 11.5 10.2 61
2023 120 11.5 10.4 61.7

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 Mary C O'Brien Elementary School

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Compare
Year # Students Full-time Teachers Student/Teacher ratio % Free/Discounted Lunch
1988 37 2.0 18.5 n/a
1989 74 3.0 24.6 n/a
1990 62 3.0 20.6 n/a
1991 84 4.0 21.0 n/a
1992 88 4.0 22.0 n/a
1993 62 4.0 15.5 n/a
1994 73 4.0 18.3 n/a
1995 73 4.5 16.2 n/a
1996 73 4.5 16.2 n/a
1997 61 6.0 10.2 n/a
1998 69 4.5 15.3 n/a
1999 60 4.5 13.3 n/a
2000 84 5.5 15.3 n/a
2001 94 6.5 14.5 n/a
2002 101 9.5 10.6 n/a
2003 101 9.5 10.6 n/a
2004 111 9.5 11.7 n/a
2005 125 10.5 11.9 95.2
2006 115 10.5 11.0 97.4
2007 119 10.5 11.3 58.8
2008 122 10.0 12.2 97.5
2009 119 10.8 11.0 97.5
2010 121 9.7 12.4 97.5
2011 129 9.7 13.2 97.7
2012 125 10.8 11.5 97.6
2013 119 10.8 11.0 97.5
2014 116 11.8 9.8 97.4
2015 123 12.0 10.2 0
2016 118 11.0 10.7 97.5
2017 117 10.8 10.8 97.4
2018 113 10.0 11.3 61.1
2019 126 11.0 11.4 n/a
2020 125 11.0 11.3 61.6
2021 117 11.7 10.0 n/a
2022 118 11.5 10.2 61
2023 120 11.5 10.4 61.7

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 Mary C O'Brien Elementary School

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YearPersonnel Expenditures from Federal FundsNon-Personnel Expenditures from Federal FundsTotal Expenditures from Federal FundsPersonnel Expenditures from State and Local FundsNon-Personnel Expenditures from State and Local FundsTotal Expenditures from State and Local FundsTotal Expenditures Per Pupil (All Funds)
2019 $00 (NaN) $00 (NaN) $00 (NaN) $00 (NaN) $00 (NaN) $00 (NaN) $00
2021 $616 (2.0%) $1,829 (6.0%) $3,062 (10.1%) $22,695 (74.8%) $5,201 (17.1%) $27,896 (91.9%) $30,341
2022 $03 (0.0%) $913 (4.0%) $920 (4.1%) $19,132 (84.6%) $2,564 (11.3%) $21,696 (95.9%) $22,613

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

Impact of COVID-19 on Mary C O'Brien Elementary School

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.

Student Body

Number of students
Pre-pandemic (2018-2019)
Number of students
Post pandemic (2022-2023)
Change (%)
Total Students126120
 4.8%
African American22
American Indian20
 100%
Asian10
 100%
Hispanic6962
 10.1%
Pacific Islander34
 33.3%
White4441
 6.8%
Two or More Races511
 120%


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Frequently Asked Questions about Mary C O'Brien Elementary School

In the 2022-23 school year, 120 students attended Mary C O'Brien Elementary School.

Students at Mary C O'Brien Elementary School are 52% Hispanic, 34% White, 9% Two or more races, 3% Pacific Islander, 2% African American.

Yes! Mary C O'Brien Elementary School is one of the best elementary schools in the state. It ranks 14th of 904 Arizona elementary schools.


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SchoolDigger data sources: National Center for Education Statistics, U.S. Department of Education, the U.S. Census Bureau and the Arizona 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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