Trimmier El, Killeen TX - Test Scores & Data

Original Research by School Decision on Trimmier El

Trimmier Elementary serves pre-K through fifth grade in Killeen, a rapidly growing military community in Central Texas. The school enrolls a substantial student population, with a majority Hispanic enrollment and a very high proportion of students qualifying for free or reduced-price lunch, reflecting the community's economic and demographic profile. The student body includes speakers of Spanish as a primary language.

On state assessments, Trimmier's results show areas of real challenge. Math proficiency across the school is notably uneven by grade. In third grade, about half the students met proficiency on the Spanish-language STAAR math assessment, but performance dropped sharply in fourth and fifth grades, where very few students demonstrated proficiency. English language arts proficiency is similarly mixed. Fifth-grade performance in ELA is more encouraging, with a meaningful share of students proficient on the English assessment, but third and fourth grade results on the Spanish exam are low. Fifth-grade science performance is particularly weak, with a small portion of students meeting the proficiency bar. Overall, proficiency across all tested subjects and grades sits in the bottom tier compared to other districts in Bell County. A parent may want to discuss with the school what support structures are in place for students in grades three and four, where the proficiency drops are most pronounced, and what interventions exist for science learning.

The district context matters for any family considering Trimmier. Killeen ISD approved a major restructuring plan in October 2025 that will close three schools at the end of this academic year, though Trimmier is not among them. However, the district is undertaking broader attendance-boundary changes and future consolidations through 2027-2028. Killeen ISD has also announced expanded bilingual programming at another elementary school starting next school year, which may affect how the district approaches dual-language or Spanish-instruction pathways over time. The district faces declining enrollment as federal military support funding changes, and families should be aware that the school landscape in Killeen ISD is in active transition.

The town itself is a military-dominated community with Fort Cavazos as the overwhelmingly dominant employer and economic anchor. Killeen is one of the fastest-growing places in the nation, driven by military family cycles. It is a car-dependent city with a small historic downtown undergoing redevelopment but limited walkability in most neighborhoods. Housing is more affordable than state and national medians, and property tax rates on school districts have fallen sharply in recent years through state-mandated compression, lowering the school portion of a family's tax bill. The community is young, diverse, and transient, with median age around 30 and substantial Latino and Black populations.

Trimmier's assessment data suggests it is a school working with significant academic headwinds. The proficiency picture points to uneven achievement and grade-level vulnerability, particularly in core skills. For families moving to the area or choosing within the district, that performance trajectory—especially the gaps between grades and subjects—warrants direct conversation with the school about instruction, class composition, and what resources exist for students who are not yet meeting grade-level standards.

See more original research from School Decision →

Academic performance

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

Math

Grade 357%

School 57% · District 19% · ▲ 38 pts above district

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

Grade 48%

School 8% · District 18% · ▼ 10 pts below district

▼ 33 pts below state median · ▼ 28 pts below county median

Grade 517%

School 17% · District 40% · ▼ 23 pts below district

▼ 24 pts below state median · ▼ 21 pts below county median

English language arts

Grade 329%

School 29% · District 13% · ▲ 16 pts above district

▼ 17 pts below state median · ▼ 15 pts below county median

Grade 423%

School 23% · District 26% · ▼ 3 pts below district

▼ 26 pts below state median · ▼ 24 pts below county median

Grade 546%

School 46% · District 53% · ▼ 7 pts below district

▼ 8 pts below state median · ▼ 4 pts below county median

Science

Grade 516%

School 16% · District 21% · ▼ 5 pts below district

▼ 7 pts below state median · ▼ 3 pts below county median

This schoolKILLEEN 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-income36%Higher-income68%32 pp gap

Grade 4Lower-income32%Higher-income50%18 pp gap

Mathematics

Grade 4Lower-income27%Higher-income58%31 pp gap