Sierra Vista Junior High, Canyon Country CA

Original Research by School Decision on Sierra Vista Junior High

Sierra Vista Junior High is a seventh- and eighth-grade school in Canyon Country, a suburban residential community in northern Los Angeles County. The school sits within the William S. Hart Union High School District, which serves the broader Santa Clarita area.

The school enrolls a diverse student body. About a third of students qualify for free or reduced-price lunch, and the enrollment is predominantly Hispanic, with smaller shares of white, Asian, Black, and multiracial students. The school is of mid-size for a junior high in the region.

Academically, Sierra Vista's performance on state assessments is below the midpoint among junior highs in Los Angeles County. In English language arts across seventh and eighth grades, proficiency is roughly at or just above half of students tested. In math, proficiency is substantially lower, in the mid-thirties percentagewise. Science proficiency, measured only in eighth grade, is also in the mid-thirties. These results reflect the school's enrollment composition and the broader context of the region; a parent may want to look into what supports the school offers for math specifically, where the attainment gap is widest.

The one available trend data point, social studies from the early 2010s, sits above these current figures, though that assessment has since been retired by California and is not directly comparable to today's state testing.

Canyon Country itself is a growing area. It began as a ranching settlement and was largely residential subdivisions built in the 1960s and 1970s. Housing is predominantly single-family owner-occupied homes and apartments in a hilly terrain along the Santa Clara River, about thirty-five miles northwest of downtown Los Angeles. Income levels range from upper-middle in the core neighborhoods to wealthier hillside communities to the east and southeast. The area is experiencing active new development, particularly the Vista Canyon mixed-use, transit-oriented project on the east side, which opened a Metrolink station in late 2023, plus several other housing communities. Housing values are moderate for Los Angeles County, though affordability remains a tension relative to typical household income for the region. The area is largely car-dependent, though Vista Canyon and newer developments market walkability. Schools are served by the William S. Hart Union High School District and Sulphur Springs Union School District.

The district has experienced several lasting changes relevant to families. Hart High School retired its long-standing Indian mascot in the 2024-25 school year and adopted the Hawks in its place. The district's major facilities bond, Measure SA, is now fully spent with no new dedicated construction funding source reported, a consideration for families thinking about future facility modernization. Additionally, Castaic High School opened to serve students in the northern part of the district, reshaping transfer rules for families in that area.

Data on special education enrollment, English learner population, graduation rates, and attendance were not available for this school. Those gaps reflect either the grade band (junior high grades are not assessed on graduation) or data that the school or state did not report.

See more original research from School Decision →

Academic performance

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

Math

Grade 734%

School 34% · District 54% · ▼ 20 pts below district

▲ 4 pts above state median · ▲ 4 pts above county median

Grade 835%

School 35% · District 49% · ▼ 15 pts below district

▲ 7 pts above state median · ▲ 5 pts above county median

English language arts

Grade 751%

School 51% · District 68% · ▼ 17 pts below district

▲ 6 pts above state median · ▲ 5 pts above county median

Grade 855%

School 55% · District 65% · ▼ 10 pts below district

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

Science

Grade 836%

School 36% · District 47% · ▼ 11 pts below district

▲ 10 pts above state median · ▲ 12 pts above county median

Social studies

Grade 863%

School 63% · District 68% · ▼ 5 pts below district

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

This schoolWilliam S. Hart Union High, 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-income40%Higher-income62%23 pp gap

Grade 8Lower-income46%Higher-income64%19 pp gap

Mathematics

Grade 7Lower-income26%Higher-income43%17 pp gap

Grade 8Lower-income25%Higher-income43%18 pp gap