Rockbrook El, Lewisville TX - Test Scores & Data

Original Research by School Decision on Rockbrook El

Rockbrook Elementary is a small school serving kindergarten through fifth grade in Lewisville, a growing suburb in the Dallas-Fort Worth area with a mixed character combining residential neighborhoods, lake amenities, and commercial industry. The school has an enrollment of roughly average for its grade band, with a majority of students qualifying for free or reduced-price lunch. The student body is predominantly Black, with substantial Hispanic representation and smaller shares of Asian, multiracial, and white students.

The school's academic performance is a concern that warrants parental attention. In reading and language arts, proficiency hovers in the range of one-third to two-fifths of students meeting grade-level standards, with fifth grade showing relatively better results. Mathematics proficiency is notably weaker, with roughly one-quarter or fewer students meeting standards in third through fifth grade. Science proficiency in fifth grade is particularly low. Across all measured subjects and grades, the school's overall proficiency index falls in the bottom quartile among Denton County school districts.

Reading is the school's stronger subject area. The pattern suggests that while many students are approaching grade-level standards, a smaller share are actually meeting them consistently. Mathematics represents a clear area where students are struggling more substantially, and science instruction at the upper grade level appears to need significant attention. Only one year of testing data is available, so trend information is not yet available to show whether performance is moving in either direction.

Lewisville Independent School District has recently made major changes that affect this school's landscape. In late 2024, the district voted to close five elementary schools beginning in 2025-26, though Rockbrook was not among them. The district also adopted a cell phone ban in schools for the 2025-26 school year. In November 2023, voters approved a substantial bond package dedicated to campus maintenance, safety upgrades, technology infrastructure, and student devices, as well as a tax-rate increase to support competitive staff pay and instructional programs.

The Lewisville housing market sits in a moderate affordability band. Home values have declined modestly from a year prior, while rental rates remain relatively stable. The area is experiencing steady population growth with significant multifamily development concentrated in the Old Town redevelopment corridor, creating a mix of traditional suburban single-family neighborhoods and newer mixed-use urban spaces. The city's major employers span manufacturing, logistics, technology, and professional services, anchored by companies like Sysco and Mary Kay.

A parent considering Rockbrook should understand that this is a school where academic proficiency, especially in mathematics and science, lags what the district and state expect. The school serves a high-poverty student population and operates within a district managing enrollment decline through consolidation. The bond funding for technology and facilities should improve the physical and technological environment over time. For families prioritizing strong baseline proficiency in core subjects, a parent may want to look into this further with the school and explore what interventions are in place to address the gaps, particularly in math. For families whose circumstances align well with this school's location and demographic profile, understanding that academic support and acceleration will likely fall to families and the school working closely together is important.

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Academic performance

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

Math

Grade 323%

School 23% · District 24% · ▼ 1 pts below district

▼ 17 pts below state median · ▼ 27 pts below county median

Grade 425%

School 25% · District 13% · ▲ 12 pts above district

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

Grade 521%

School 21% · District 60% · ▼ 39 pts below district

▼ 20 pts below state median · ▼ 27 pts below county median

English language arts

Grade 334%

School 34% · District 20% · ▲ 14 pts above district

▼ 12 pts below state median · ▼ 27 pts below county median

Grade 433%

School 33% · District 27% · ▲ 6 pts above district

▼ 16 pts below state median · ▼ 27 pts below county median

Grade 541%

School 41% · District 70% · ▼ 29 pts below district

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

Science

Grade 58%

School 8% · District 4% · ▲ 4 pts above district

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

This schoolLEWISVILLE 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-income33%Higher-income38%5 pp gap

Grade 4Lower-income33%Higher-income33%0 pp gap

Grade 5Lower-income37%Higher-income56%19 pp gap

Mathematics

Grade 3Lower-income20%Higher-income33%13 pp gap

Grade 4Lower-income23%Higher-income32%9 pp gap

Grade 5Lower-income20%Higher-income25%5 pp gap