At a glance
Reported students
123
NCES CCD 2024–25
Teachers (FTE)
12.51
NCES CCD 2024–25
Student–teacher ratio
9.8:1
Calculated; not a class-size measure
Grades served
KG–06
NCES preliminary directory 2025–26
School benchmarks
Arizona elementary enrollment
10th percentile
Compared with 1,189 same-level schools reporting enrollment.
District median enrollment
99
Mary C O'Brien Elementary School: 123 reported students.
State peer staffing position
4th percentile
9.8:1 reported; state peer median 16.3:1. Ratio is not class size.
Historical enrollment and staffing · CRDC 2021–22
These older figures are kept separate from 2024–25 statistics and benchmarks. Differences between years can reflect changes in enrollment, staffing, or reporting scope.
- Students
- 118
- Teachers (FTE)
- 11.5
- Student–teacher ratio
- 10.3:1
What the reported data says about Mary C O'Brien Elementary School
Mary C O'Brien Elementary School is a public elementary school serving grades KG–06 in Casa Grande. It is one of 2 current school records connected to Mary C O'Brien Accommodation District (4435). NCES reports 123 students for 2024–25.
Among 1,189 elementary schools in Arizona with comparable records, this school is smaller than the reported median of 453 students. Its enrollment is at approximately the 10th percentile for that peer group. Size describes the campus, not instructional quality.
The reported student–teacher ratio is 9.8:1, below the Arizona median of 16.3:1 for the same school level. This ratio uses total enrollment and teacher FTE; it is not an average classroom headcount and can be affected by special programs or part-time staffing.
The largest reported race and ethnicity groups are Hispanic or Latino (52.8%) and White (36.6%). English learners represent 2.5% of enrollment. Students served under IDEA represent 12.7%. These figures help families understand who the school serves; they are not rating inputs.
The 2021–22 civil-rights collection reports gifted and talented programming. Program availability changes, so families should confirm the current catalog and participation rules directly with the school.
Questions worth asking Mary C O'Brien Elementary School
- 1How do the reported 9.8:1 student–teacher ratio and 12.51 teacher FTE translate into actual class sizes by grade?
- 2Which advanced, gifted, career, arts, and computer-science courses are available this year, and how do students qualify?
- 3What counseling support is available today? The school reported 0 counselor FTE in 2021–22.
- 4What meal assistance, transportation, after-school, and family-support services are currently available?
Enrollment needs
- English learners
- 2.5%
- Students with disabilities
- 12.7%
- Lunch program
- Yes under Provision 3
Reported support staff
- Counselors (FTE)
- 0
- Nurses (FTE)
- 0.5
- Psychologists (FTE)
- 0
- Social workers (FTE)
- 1
CRDC 2021–22 full-time-equivalent counts; verify current assignments with the school.
Student demographics
Race and ethnicity share of reported enrollment
- White36.6%
- Hispanic52.8%
- Black0.8%
- Asian0%
- American Indian / Alaska Native2.4%
- Native Hawaiian / Pacific Islander0%
- Multiracial7.3%
Race/ethnicity: NCES CCD 2024–25. English learner and disability context: CRDC 2021–22. Lunch eligibility: NCES CCD 2024–25. Privacy rules can produce missing values.
Programs reported by the school
Gifted and talented
Offered
CRDC 2021–22: the AP flag records student enrollment; gifted and computer-science fields describe reported programs/classes. Confirm current courses and eligibility with the school.
Other schools in Mary C O'Brien Accommodation District (4435)
Start with campuses at the same school level or with similar reported enrollment.
View all 2 district schools →Public schools near Mary C O'Brien Elementary School
Closest campuses by straight-line distance between NCES geocodes, favoring the same school level. Distance is not drive time or an attendance assignment.
| School | Grades | Students | Distance |
|---|---|---|---|
| West Elementary School Elementary · Coolidge Unified District (4442) | PK–06 | 604 | 6.1 mi |
| Heartland Ranch Elementary School Elementary · Coolidge Unified District (4442) | KG–06 | 545 | 6.4 mi |
| Imagine Coolidge Elementary Elementary · Charter · Imagine Coolidge Elementary Inc. (89786) | KG–05 | 645 | 6.9 mi |
| Desert Willow Elementary School Elementary · Casa Grande Elementary District (4446) | PK–08 | 505 | 8.5 mi |
| Mesquite Elementary School Elementary · Casa Grande Elementary District (4446) | PK–08 | 439 | 8.7 mi |
| The Grande Innovation Elementary · Charter · The Grande Innovation Academy (92978) | KG–08 | 833 | 8.9 mi |
Frequently asked questions about Mary C O'Brien Elementary School
What grades does Mary C O'Brien Elementary School serve?
Mary C O'Brien Elementary School reports grades KG–06 in the NCES 2025–26 preliminary directory. It is classified as an elementary school in Mary C O'Brien Accommodation District (4435).
How many students attend Mary C O'Brien Elementary School?
Mary C O'Brien Elementary School reported 123 students in the NCES 2024–25 membership file. That places it near the 10th percentile among 1,189 Arizona elementary schools reporting enrollment. The 2021–22 civil-rights collection recorded 118 students.
What is the student–teacher ratio at Mary C O'Brien Elementary School?
The calculated ratio is 9.8:1, based on 123 students and 12.51 full-time-equivalent classroom teachers in 2024–25. The Arizona median for the same school level is 16.3:1. A ratio is not the same as average class size.
Is Mary C O'Brien Elementary School a public, charter, or magnet school?
Mary C O'Brien Elementary School is a public school and is not a charter school. Enrollment is generally based on Mary C O'Brien Accommodation District (4435) attendance boundaries and transfer rules.
Which school district is Mary C O'Brien Elementary School in?
Mary C O'Brien Elementary School is part of Mary C O'Brien Accommodation District (4435), based in Toltec, AZ, which operates 2 current schools. Confirm attendance zones and enrollment rules with the district.
What public schools are near Mary C O'Brien Elementary School?
The closest public schools by straight-line distance include West Elementary School (6.1 mi), Heartland Ranch Elementary School (6.4 mi), Imagine Coolidge Elementary (6.9 mi). Distance does not determine eligibility; attendance boundaries and program rules do.