Leadership Preparatory Brownsville Charter School, Brooklyn NY

Original Research by School Decision on Leadership Preparatory Brownsville Charter School

Leadership Preparatory Brownsville Charter School, now branded as Uncommon Brownsville South, is a kindergarten-through-eighth-grade charter school operated by Uncommon Schools in Brooklyn's Brownsville neighborhood. The school serves students from one of the city's economically disadvantaged areas; a substantial majority qualify for free or reduced-price lunch. The student body is predominantly Black, with a significant Hispanic population and smaller numbers of other backgrounds.

The school's academic results present a mixed picture across grades and subjects. In math, proficiency declines noticeably as students advance. Third-grade students show strong performance, while fourth-graders maintain solid results, but proficiency drops measurably by fifth grade and continues declining through the middle grades. Seventh and eighth graders show the lowest math results. English language arts performance follows a similar arc, though with some variation: third graders perform reasonably well, fourth graders stay solid, but fifth and sixth grades show a dip. Eighth-grade ELA results rebound noticeably. Science proficiency, tested in fifth and eighth grade, presents a concern. Fifth-grade science performance is notably low. Eighth-grade science data was not available.

Across tested subjects and grades, the school's overall proficiency index sits above the midpoint among charter and traditional public schools in Kings County, suggesting the school's results are competitive within its local district context. However, a parent may want to look into the downward trend in math proficiency as students move into the upper grades, particularly in grades six and seven, and the weak fifth-grade science results.

The school is part of a structured pathway through the Uncommon Schools network. Students attend a K-4 elementary academy, then transition to a grades-5-8 middle academy, after which they move on to an Uncommon high school for grades nine and beyond. This design shapes continuity and school culture across the grades.

Brooklyn itself is a large, dense borough with varied neighborhoods. The Brownsville area where this school sits is a working-class community with strong walkability and transit access, though it faces economic hardship. Housing costs in the Brooklyn zip code are substantial relative to the school's student population, reflecting broader affordability pressures across the borough. The neighborhood has public transportation access, parks, and public services typical of residential Brooklyn, though community resources are concentrated in commercial and civic anchors scattered throughout the borough rather than in a single downtown.

Enrollment data show no specific information about the school's special education or English learner populations. State testing shows solid participation rates overall, indicating the school's accountability data captures most students who attend.

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Academic performance

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

New York Regents Exams

2 courses reported · 2024-25

End-of-course exams required for a New York Regents diploma. Each row shows the cohort size and the share of students scoring at the proficient level or higher.

Course	Students tested	% proficient
Science	72	61.0%
Math	54	85.0%

Math

Grade 387%

School 87% · district not reported

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

Grade 478%

School 78% · district not reported

▲ 19 pts above state median · ▲ 11 pts above county median

Grade 567%

School 67% · district not reported

▲ 15 pts above state median · ▲ 9 pts above county median

Grade 664%

School 64% · district not reported

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

Grade 761%

School 61% · district not reported

▲ 8 pts above state median · ▲ 2 pts above county median

Grade 843%

School 43% · district not reported

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

English language arts

Grade 379%

School 79% · district not reported

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

Grade 468%

School 68% · district not reported

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

Grade 554%

School 54% · district not reported

even with state median · ▼ 8 pts below county median

Grade 652%

School 52% · district not reported

▲ 7 pts above state median · even with county median

Grade 753%

School 53% · district not reported

▲ 6 pts above state median · ▼ 4 pts below county median

Grade 873%

School 73% · district not reported

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

Science

Grade 521%

School 21% · district not reported

▼ 21 pts below state median · ▼ 19 pts below county median

Grade 80%

School 0% · district not reported

▼ 33 pts below state median · ▼ 25 pts below county median

This schoolDistrict average, 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-income78%Higher-income89%11 pp gap

Grade 7Lower-income54%Higher-income50%4 pp gap

Grade 8Lower-income73%Higher-income73%1 pp gap

Mathematics

Grade 3Lower-income85%Higher-income100%15 pp gap

Grade 7Lower-income59%Higher-income70%11 pp gap