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Elementary · Regular · Grades K to 6

Mary C O'Brien Elementary School, Casa Grande, AZ

Mary C O'Brien Elementary School is a public elementary school in Casa Grande, part of Mary C O'Brien Accommodation District (4435). It enrolled 123 students in 2024-25, with 10.2 students per full-time teacher.Listed in NCES data as "Mary C O'Brien Elementary School".

Enrollment and teachers

Students
123
Teachers (FTE)
12.0
Students per teacher
10.2
Grades
K to 6

This school's ratio is 1.6 higher than the district figure of 8.6. The Arizona average across schools is 17.7. Ratios count all teachers, including specialists, so they are lower than typical class sizes.

This school10.2
District8.6
Arizona17.7
United States15.3

School details

Address
1400 N Eleven Mile Corner Rd, Casa Grande, AZ 85194
Phone
(520)450-4400
District
Mary C O'Brien Accommodation District (4435)
County
Pinal County
Level
Elementary
Type
Regular
Status
Open
Charter
No
Virtual
No
Locale
Rural: Distant
NCES school ID
040274000203
Location from NCES coordinates. Map data OpenStreetMap contributors. Open larger map

School meals

Counts of students eligible for free or reduced-price lunch, as reported to NCES.
Direct certification
40Students certified through programs such as SNAP, without an application.
Community Eligibility Provision
No

Schools in the Community Eligibility Provision (CEP) serve free meals to all students, so their free lunch counts often reflect direct certification or total enrollment. Free and reduced lunch shares are not comparable between CEP and non-CEP schools.

Related schools

Elementary schools elsewhere in Casa Grande

We publish official enrollment and staffing data, not ratings or test scores.

Source: NCES Common Core of Data 2024-25 and F-33 finance 2020, via the Urban Institute Education Data Portal. Last reviewed October 2026. Blank values are not available, not applicable or suppressed in the source. See the methodology.