Mills Es, Owasso OK - Test Scores & Data

Original Research by School Decision on Mills Es

Mills ES is a public elementary school in Owasso, part of the Owasso Public Schools district. It serves children from pre-kindergarten through fifth grade, making it a typical neighborhood feeder school for the district’s middle and high schools. The school has an enrollment around the size you would expect for a K-5 building in a growing suburban community, with multiple sections per grade.

Academically, Mills ES participates in Oklahoma’s state testing program for grades three through five. In math, the proportion of students scoring proficient or above varied noticeably by grade level, with third graders showing a stronger result and fifth graders a weaker one. Reading followed a similar pattern: third graders had a higher proficiency rate than either fourth or fifth graders. Science test results for fifth graders were not reported, a suppression that often occurs when the tested group is too small to publicly share, so a parent may want to ask the school directly for that information. When looking at the school’s overall proficiency across all tested subjects and grades, Mills ES lands above the midpoint when compared with other districts in Tulsa County, a solid position within a large and diverse county.

The student body is diverse. White students make up the largest share, followed by Hispanic students and those identifying as two or more races. Asian, American Indian or Alaska Native, and Black students each account for a smaller but present portion. Data on free or reduced-price meal eligibility, special education, and English learner status was not available in the records provided, so a parent interested in understanding the school’s support resources and economic makeup should check with the school or district directly.

Mills ES is located in Owasso, a fast-growing suburb just north of Tulsa. Owasso’s character is primarily suburban and car-dependent, with many residents commuting to Tulsa-area employers such as American Airlines, Boeing, and Whirlpool. The city has seen sustained population growth over recent decades, driving corresponding growth in the school district. In 2021, Owasso voters passed a bond measure funding a new elementary school, security upgrades, and other district improvements to keep pace with enrollment increases. That new school, Stone Canyon Elementary, opened for the 2023-2024 school year. The district also adopted a new English Language Arts curriculum for its elementary schools in 2023, emphasizing phonics and alignment with Oklahoma standards. For a family considering Mills ES, these district-level investments suggest a community actively responding to growth.

Because Mills ES only serves through fifth grade, there is no graduation rate to consider, and the school does not offer the advanced courses or career pathways found at the high school level. What it does provide is a grade-band-typical program within a district that has been expanding and updating its elementary offerings. The academic picture is mixed: some grades perform above the county midpoint, while others show room for improvement, particularly in the upper elementary years. Parents might want to ask how the school supports students as they move from third to fifth grade, especially in math and reading. Overall, Mills ES fits the profile of a suburban elementary school in a growing district, with a diverse student body and academic results that vary by subject and grade.

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Academic performance

How students perform on state tests, by grade, set against the district.

Math

Grade 348%

School 48% · District 49% · ▼ 1 pts below district

▲ 19 pts above state median · ▲ 23 pts above county median

Grade 430%

School 30% · District 54% · ▼ 24 pts below district

even with state median · ▲ 4 pts above county median

Grade 518%

School 18% · District 36% · ▼ 18 pts below district

▼ 2 pts below state median · ▼ 2 pts below county median

English language arts

Grade 338%

School 38% · District 42% · ▼ 4 pts below district

▲ 16 pts above state median · ▲ 20 pts above county median

Grade 421%

School 21% · District 33% · ▼ 12 pts below district

▲ 3 pts above state median · ▲ 7 pts above county median

Grade 525%

School 25% · District 32% · ▼ 7 pts below district

▲ 4 pts above state median · ▲ 5 pts above county median

This schoolOWASSO, same grade

Graduation rate (ACGR) reflects the federally published Adjusted Cohort Graduation Rate for the most recent year available. We refresh this data annually at the close of each academic year in June. The federal source publishes a banded rate (for example, "90-94%") instead of an exact number for cohorts small enough to risk identifying individual students. The state distribution chart, where shown, plots every school in the state with a published rate or band; schools whose rate is federally suppressed are excluded. Where the federal source publishes a band rather than an exact rate, the school is placed within its band using a stable, ID-derived offset, so its position is consistent across visits.

Proficiency by household income

English language arts

Grade 3Lower-income43%Higher-income71%28 pp gap

Grade 4Lower-income47%Higher-income33%13 pp gap

Grade 5Lower-income49%Higher-income57%8 pp gap

Mathematics

Grade 3Lower-income42%Higher-income71%29 pp gap

Grade 4Lower-income31%Higher-income20%11 pp gap

Grade 5Lower-income39%Higher-income43%4 pp gap