Summary
Pioneer Elementary is a K–5 school in Brentwood, California, serving 859 students in the Brentwood Union district; it has the largest enrollment among the nearby schools listed. In 2025–26, its English language arts (ELA) and math proficiency rates were slightly above California’s, while science was essentially at the state level, but the school trailed its district in all three subjects. The clearest concern is third-grade math: 37% of students were proficient, 10 points below the state and 15 below the district.
Compared with the eight other nearby K–5 schools, Pioneer was stronger in ELA and science but weaker in math. Its ELA proficiency was 52%, 6 points above the peer average of 45%; science was 36%, 5 points above the peer average of 31%. Math was 39%, 3 points below the peer average of 42%, and Pioneer’s third-grade math result was below every nearby school’s, whose scores ranged from 40% to 69%. Against state results, Pioneer was 2 points higher in ELA and 1 point higher in math, while science was essentially level; against the district, it was 4 points lower in each subject. Fourth grade was a relative bright spot, with ELA at 54% and math at 44%.
Over time, ELA proficiency stayed nearly flat at about 51% from 2022–23 to 2025–26, while math fell from 44% to 39% and science from 40% to 36%. Chronic absenteeism improved, declining from 24% in 2021–22 to 14% in 2025–26; the latest rate was 13.5%, close to the district’s 13.6%. SchoolDigger rated Pioneer at the 60th percentile with 3 stars in 2025–26, fifth-highest among nine nearby K–5 schools; its student-teacher ratio was 26.3 in 2024–25, the highest among nearby schools with reported ratios. Pioneer’s low-income measure was 23% directly certified for free meals in 2024–25. SchoolDigger’s subgroup ranking placed Pioneer at the 11th percentile for how well it served Multiracial Students, compared with the school’s overall 60th percentile. Its ranking for how well it served Asian Students was at the 21st percentile.
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