Mountain View Elementary, Simi Valley CA

Original Research by School Decision on Mountain View Elementary

Mountain View Elementary serves kindergarten through sixth grade in Simi Valley, a residential suburb in Ventura County anchored by master-planned subdivisions and a car-oriented layout. The school enrolls a modest student population with meaningful economic diversity: roughly half qualify for free or reduced-price lunch. The student body is split between Hispanic and white enrollment, with smaller shares of Asian, multiracial, and other students. Specific data on English learners and students with IEPs was not available.

On the most recent state assessments, Mountain View's proficiency rates fall noticeably below the median among Ventura County school districts. In English language arts across tested grades, proficiency ranges from a low in third grade to the strongest showing in fifth grade, though even the fifth-grade result sits below the county median. Math proficiency is more challenging across the board, with lower performance in fourth and fifth grade particularly. Science proficiency data, available only for fifth grade, also comes in below county midpoint performance. The school's overall proficiency index places it below the midpoint in the county comparison set. Only one year of data is on file, so trend direction cannot be assessed.

A significant structural change took effect this year: the district moved all sixth graders from elementary schools to middle school campuses, eliminating the former option to keep a sixth grader in an elementary setting. For families considering Mountain View, this means sixth grade will not be an experience at this school; the transition happens after fifth grade.

Simi Valley itself is a sprawling community of about mid-sized population that has grown slowly in recent years, functioning primarily as a bedroom community for workers commuting to Los Angeles County. The city lacks a traditional walkable downtown; instead, a consolidated Civic Center groups municipal services together, and the Simi Valley Town Center mall serves as the main commercial hub. Daily life is car-dependent, though the Arroyo Simi Trail offers a grade-separated path for pedestrians and cyclists. The city is pursuing infill housing and higher-density development under regional allocations, with a slate of mixed-use and multifamily projects proposed over the coming years. Major employers include aerospace and manufacturing firms such as AeroVironment, health care, and retail trade.

Housing prices in the area are at a level well above the national benchmark, and rental costs remain substantial; affordability metrics show that both renting and mortgage-carrying are significant household expenses. The Ronald Reagan Presidential Library is a major regional destination.

The district itself is making curriculum additions: a new Dual Language Immersion program in Spanish and English began at Arroyo Elementary in 2024-25 and will eventually feed into a cohort pathway through middle and high school. The district is also preparing a bond measure for the November 2026 ballot to fund facilities upgrades, which if passed would represent an additional property-tax obligation alongside two existing bonds still in repayment.

A parent looking at Mountain View should understand that the school's current test results are measurably below county average across all tested subjects and grades, making it a place where academic support or tutoring may be worth investigating. The shift of sixth grade to middle school is a structural fact to plan around. The school sits in a suburban context with limited walkability and a commuting population, served by regional Metrolink access and local bus routes.

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Academic performance

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

Math

Grade 341%

School 41% · District 51% · ▼ 10 pts below district

▼ 1 pts below state median · even with county median

Grade 433%

School 33% · District 48% · ▼ 15 pts below district

▼ 5 pts below state median · ▼ 4 pts below county median

Grade 527%

School 27% · District 37% · ▼ 10 pts below district

▼ 4 pts below state median · even with county median

English language arts

Grade 333%

School 33% · District 48% · ▼ 15 pts below district

▼ 7 pts below state median · ▼ 6 pts below county median

Grade 439%

School 39% · District 50% · ▼ 11 pts below district

▼ 3 pts below state median · ▼ 4 pts below county median

Grade 556%

School 56% · District 55% · ▲ 1 pts above district

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

Science

Grade 535%

School 35% · District 38% · ▼ 3 pts below district

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

This schoolSimi Valley 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 3Lower-income25%Higher-income48%23 pp gap

Grade 4Lower-income27%Higher-income58%31 pp gap

Grade 5Lower-income51%Higher-income61%10 pp gap

Grade 6Lower-income36%Higher-income24%13 pp gap

Mathematics

Grade 3Lower-income24%Higher-income71%47 pp gap

Grade 4Lower-income19%Higher-income54%35 pp gap

Grade 5Lower-income18%Higher-income36%18 pp gap

Grade 6Lower-income13%Higher-income43%30 pp gap