Twin Chimneys Elem., O'fallon MO

Original Research by School Decision on Twin Chimneys Elem.

Twin Chimneys Elementary is a regular public school in O’Fallon, Missouri, serving kindergarten through fifth grade as part of the Fort Zumwalt School District. O’Fallon is a large, auto-oriented suburb of St. Louis, with a mix of residential subdivisions, shopping corridors, and business parks. The school is located on a boulevard in a residential area, and the surrounding community has seen steady population growth. Housing in the area is expensive, with home values and rents well above national averages. The district itself has not reported any recent major changes that would affect families.

The school enrolls a student body of about that size for an elementary school. The student population is predominantly white, with a substantial Asian minority, and smaller shares of students who identify as two or more races, black, or Hispanic. The share of students who qualify for free or reduced-price lunch is low, indicating a relatively affluent peer environment. Data on students with disabilities and English learners was not available, so a parent may want to ask the school about those support services directly.

On the Missouri Assessment Program, Twin Chimneys students perform at levels that place the school above the midpoint among school districts in St. Charles County when considering overall proficiency across tested subjects and grades. In math, proficiency rates across grades three through five are solid, with the fourth-grade cohort showing the highest share of students meeting or exceeding standards. In English language arts, the fifth-grade cohort stands out with a particularly strong proficiency rate, while third and fourth grade are also solid. Science, tested only in fifth grade, shows a similar solid proficiency rate. The overall pattern is one of consistent, above-average academic performance for the county.

The school does not have a graduation rate because it only serves elementary grades. No data on chronic absenteeism, discipline, or staffing was available in the provided information, so those are gaps a family may want to explore with the school directly.

For a parent considering Twin Chimneys, the picture is that of a financially stable, academically strong suburban elementary school. The peer group is largely from higher-income households, and the school’s test results are better than those of most other districts in the county. The surrounding community offers extensive parks, sports complexes, and shopping, though it is not a walkable downtown environment. The school itself is part of a large district, so the experience of a family may also be shaped by the district’s broader policies and offerings. The lack of data on special education and English learner services means those are areas worth investigating if they apply to your child. Overall, this is a school that fits a family seeking a strong academic foundation in a stable, suburban context.

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Academic performance

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

Math

Grade 358%

School 58% · District 47% · ▲ 11 pts above district

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

Grade 461%

School 61% · District 55% · ▲ 6 pts above district

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

Grade 557%

School 57% · District 48% · ▲ 9 pts above district

▲ 22 pts above state median · ▲ 6 pts above county median

English language arts

Grade 360%

School 60% · District 53% · ▲ 7 pts above district

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

Grade 458%

School 58% · District 56% · ▲ 2 pts above district

▲ 16 pts above state median · even with county median

Grade 571%

School 71% · District 54% · ▲ 16 pts above district

▲ 31 pts above state median · ▲ 14 pts above county median

Science

Grade 563%

School 63% · District 50% · ▲ 12 pts above district

▲ 22 pts above state median · ▲ 12 pts above county median

This schoolFORT ZUMWALT SCHOOL DISTRICT, 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.