Twelve Bridges Middle, Lincoln CA

Original Research by School Decision on Twelve Bridges Middle

Twelve Bridges Middle is a comprehensive middle school serving grades six through eight in Lincoln, a fast-growing suburb about thirty miles northeast of Sacramento in Placer County. The school sits in one of the region's most rapidly expanding residential areas, where new home construction and family-focused development have driven sustained enrollment growth.

The school's state test results show uneven performance across subjects. In English language arts, results are solid: middle-grade students show strong proficiency overall, with seventh graders performing at the higher end. Math proficiency is lower and increases noticeably across the grade span from sixth to eighth grade. Science proficiency in eighth grade sits at roughly the middle range. When averaged across tested subjects and grades, the school's overall proficiency index places it in the top quartile relative to districts in Placer County.

The student body reflects Lincoln's character as an affordable, family-oriented suburban community. The majority of students are white, with meaningful representation from Hispanic, Asian, and multiracial families. Roughly one in six students qualifies for free or reduced-price lunch, suggesting a generally stable economic profile for the attendance area. Data on the count of English learners and students receiving special education were not available.

Lincoln itself is a residential community organized around a preserved historic downtown and newer master-planned neighborhoods. The city has grown substantially and continues to do so, with active construction from major homebuilders and an orientation toward keeping commerce and residents close together through a "village concept" design. The Thunder Valley Casino Resort is a major regional employer. Housing values in the area are above state and national benchmarks, though still considered moderate for the Sacramento region, and rents have risen modestly. The school's location in the Twelve Bridges development, near the new Twelve Bridges High School that opened in 2021, places it in one of the community's newer neighborhoods.

The broader context includes repeated failure of the Western Placer Unified School District to pass construction bonds in recent years, most recently in 2022. This means planned facility improvements, including an aquatic center, remain unfunded despite rapid growth in the student population. For families considering the area, that constraint on new facilities is worth noting alongside the opening of the second comprehensive high school, which does reshape high school enrollment pathways for residents.

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Academic performance

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

Math

Grade 652%

School 52% · District 40% · ▲ 12 pts above district

▲ 21 pts above state median · even with county median

Grade 759%

School 59% · District 44% · ▲ 15 pts above district

▲ 29 pts above state median · ▲ 10 pts above county median

Grade 862%

School 62% · District 49% · ▲ 14 pts above district

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

English language arts

Grade 661%

School 61% · District 48% · ▲ 13 pts above district

▲ 17 pts above state median · ▼ 2 pts below county median

Grade 782%

School 82% · District 68% · ▲ 14 pts above district

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

Grade 873%

School 73% · District 59% · ▲ 15 pts above district

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

Science

Grade 855%

School 55% · District 41% · ▲ 14 pts above district

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

Social studies

Grade 869%

School 69% · District 63% · ▲ 6 pts above district

▲ 20 pts above state median · even with county median

This schoolWestern Placer Unified, 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 6Lower-income39%Higher-income66%27 pp gap

Grade 7Lower-income71%Higher-income84%13 pp gap

Grade 8Lower-income54%Higher-income76%22 pp gap

Mathematics

Grade 6Lower-income27%Higher-income57%30 pp gap

Grade 7Lower-income52%Higher-income61%9 pp gap

Grade 8Lower-income37%Higher-income66%29 pp gap