Mark West Charter, Santa Rosa CA

Original Research by School Decision on Mark West Charter

Mark West Charter is a kindergarten-through-eighth-grade charter school in Santa Rosa operated by the Mark West Union Elementary School District. The school serves a small enrollment of just over one hundred students, with the student body concentrated in grades seven and eight; the school has minimal enrollment in its lower grades.

The student population is economically diverse, with about half the students qualifying for free or reduced-price lunch. Racially and ethnically, the school reflects the broader Santa Rosa area, with students who are white, Hispanic, Asian, Black, and other groups represented.

In state testing, Mark West Charter shows mixed performance. In seventh grade, students demonstrated proficiency in English language arts at a level around the middle range, while seventh-grade math proficiency falls below that. Eighth-grade results are lower across both subjects: language arts proficiency is in the low-to-mid range, and math proficiency is significantly lower still. Science performance in eighth grade is notably weak. Some testing results for lower grades are suppressed due to small class sizes, and testing data for sixth grade is not available, possibly reflecting recent changes to the school's structure or enrollment. The school's overall proficiency index across all tested subjects and grades places it below the midpoint among districts across Sonoma County.

The school operates in Santa Rosa, a mixed-character city and the county seat, where the downtown area is undergoing reinvestment as a civic and residential center. Downtown walkability is strong in the core, though the broader city is more car-dependent. The region's economy centers on healthcare and government; major employers include Kaiser Permanente and Sonoma County government. A network of regional parks, including the adjoining Howarth Park and Spring Lake Regional Park, anchors outdoor recreation.

Housing in Santa Rosa's zip code carries substantial value and rents are significant, consistent with a tight California market. The affordability index suggests housing costs are a substantial portion of household income. The area sits within an urban growth boundary, meaning future development is directed inward through infill rather than outward sprawl.

Within the Mark West Union Elementary School District itself, two of the three traditional elementary campuses—John B. Riebli and San Miguel—have recently converted to site-based charter schools. Mark West Charter and the newly chartered campuses represent a shift in how the district structures elementary access. A parent exploring schools in this district would want to understand how these charter conversions align with their preferences for school governance and approach.

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Academic performance

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

Math

Grade 744%

School 44% · District 44%

▲ 14 pts above state median · ▲ 13 pts above county median

Grade 831%

School 31% · District 31%

▲ 3 pts above state median · ▲ 1 pts above county median

English language arts

Grade 753%

School 53% · District 53%

▲ 7 pts above state median · ▲ 7 pts above county median

Grade 833%

School 33% · District 33%

▼ 11 pts below state median · ▼ 14 pts below county median

Science

Grade 823%

School 23% · District 23%

▼ 3 pts below state median · ▼ 5 pts below county median

Social studies

Grade 872%

School 72% · District 72%

▲ 23 pts above state median · ▲ 13 pts above county median

This schoolMark West Union Elementary, 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 7Lower-income39%Higher-income68%29 pp gap

Grade 8Lower-income35%Higher-income31%4 pp gap

Mathematics

Grade 7Lower-income26%Higher-income64%39 pp gap

Grade 8Lower-income27%Higher-income35%8 pp gap