John W Armstrong El, Sachse TX - Test Scores & Data

Original Research by School Decision on John W Armstrong El

John W Armstrong Elementary is a PreK through fifth-grade school in Sachse, Texas, serving an enrollment of roughly mid-range size for its grade band in a rapidly growing northeastern Dallas suburb. The school sits within Garland ISD, which has recently adopted a new district-wide curriculum framework emphasizing explicit instruction and aligned assessments, and has navigated a multi-year campus consolidation due to declining enrollment.

The school's academic performance shows solidly proficient work in English language arts and mathematics across grades three through five. Reading results are strong, with most grades landing in a clear proficiency range; fifth grade stands out with notably higher performance in reading. Math proficiency is steady across the tested grades, clustering in the mid-range with consistent scores. On science, state testing occurs only in fifth grade; that result is notably lower, with proficiency substantially below the reading and math picture. The school's overall proficiency index across tested subjects places it in the top quartile when compared against other schools in Dallas County, a meaningful positioning that reflects the reading and math work.

The student body is diverse and economically mixed. About four in ten students qualify for free or reduced-price lunch. Racially and ethnically, the enrollment spans white, Hispanic, Asian, and Black students in roughly similar shares, with Asian representation notably higher than county averages. The school does not report special education identification or English learner counts in the available data, so a parent may want to look into how the school supports those populations directly with the school.

Sachse itself is a growing, car-oriented suburb with owner-occupied housing and household incomes running well above national norms. The housing market reflects stable single-family dominance, and the city is in the midst of rapid population growth and mixed-use development, particularly around new downtown-style districts. Garland ISD faces structural headwinds, including an aging building stock (addressed in part by a voter-approved bond), declining enrollment that prompted campus consolidations, and a recent property tax increase approved to fund operations and teacher retention. These district-level changes are matters a parent considering the area should understand as long-term factors shaping school stability and resource allocation.

The school's strongest academic story is reading and mathematics proficiency across elementary grades. The lower science result is a soft spot worth understanding further; state science testing comes only once, in fifth grade, so limited testing history makes trends hard to assess. The school offers the breadth of instruction expected in a regular public elementary, though specific program details such as gifted services, dual-language pathways, or specialized enrichment were not available in the data. A parent interested in those particulars should reach out to the school directly. Overall, this is a school with solid middle-grade proficiency in core subjects, serving a diverse, economically stable student body in a community undergoing significant growth and change.

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Academic performance

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

Math

Grade 370%

School 70% · District 30% · ▲ 40 pts above district

▲ 30 pts above state median · ▲ 35 pts above county median

Grade 470%

School 70% · District 21% · ▲ 49 pts above district

▲ 29 pts above state median · ▲ 33 pts above county median

Grade 568%

School 68% · District 52% · ▲ 16 pts above district

▲ 27 pts above state median · ▲ 30 pts above county median

English language arts

Grade 375%

School 75% · District 54% · ▲ 21 pts above district

▲ 29 pts above state median · ▲ 38 pts above county median

Grade 473%

School 73% · District 39% · ▲ 34 pts above district

▲ 24 pts above state median · ▲ 27 pts above county median

Grade 579%

School 79% · District 62% · ▲ 17 pts above district

▲ 25 pts above state median · ▲ 29 pts above county median

Science

Grade 538%

School 38% · District 26% · ▲ 12 pts above district

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

This schoolGARLAND ISD, 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-income65%Higher-income84%19 pp gap

Grade 4Lower-income70%Higher-income76%6 pp gap

Grade 5Lower-income76%Higher-income81%5 pp gap

Mathematics

Grade 3Lower-income60%Higher-income77%17 pp gap

Grade 4Lower-income59%Higher-income78%19 pp gap

Grade 5Lower-income63%Higher-income72%9 pp gap