The top reported proficiency rate is 15% in English language arts. The lowest is 13% in Science.
Original Research by School Decision on Rio Plaza Elementary
Rio Plaza Elementary is a small elementary school serving kindergarten through fifth grade in Oxnard, a mixed-use city that functions as Ventura County's largest population and commercial center, blending agricultural heritage with suburban development and a coastal location. The school is located in the Rio Elementary School District.
The academic picture at Rio Plaza presents significant challenges. State assessment results from the most recent year show proficiency rates well below what the state expects. In mathematics across grades three through five, fewer than one in six students showed proficiency, with fifth-grade math proficiency particularly low. English language arts results ranged from around one in ten students proficient in grades three and four to about one in four in grade five. Science proficiency in fifth grade was also very low. Across all tested subjects and grade levels, Rio Plaza's overall proficiency sits in the bottom quartile relative to other districts in Ventura County. Only one year of assessment data was available, so trends over time cannot be assessed.
The student population is small, with about four hundred fifty students spread across the six grades. The vast majority of students come from families with low income: more than four in five students qualify for free or reduced-price lunch. The school is predominantly Hispanic, with more than nine in ten students identifying as Hispanic or Latino, and the remainder a small number of white students and even smaller numbers of other backgrounds. The school does not report specific counts for English learner status or special education enrollment, so the full profile of student needs remains incomplete from the available data.
Oxnard itself is growing substantially. City planners report numerous residential projects under construction across coastal, central, and northern areas of the city, with a mix of for-sale and rental units, including some affordable housing. The historic downtown is highly walkable, though the broader city is car-oriented. Newer schools like Rio Plaza sit on separated campuses on former farmland rather than in the downtown core. Civic anchors include the Oxnard Public Library system, the John C. Zaragoza Transit Center connecting Metrolink and local buses, and parks and beaches that shape daily life. Major employers span agriculture, manufacturing, healthcare, and port operations.
The Rio Elementary School District itself is undergoing strategic change. Voters approved a general obligation bond in 2022 for classroom renovations, safety improvements, and new facilities, with costs spread across property taxes on all taxable property in the district. The district has shifted from a traditional six-elementary-and-two-middle structure toward a K-8 academy model, including the newly opened Rio del Sol K-8 STEAM academy, the first K-8 campus in the district and the first STEAM-focused school in Ventura County, emphasizing hands-on, inquiry-based learning. Rio Plaza remains a traditional elementary school within this transition, not yet part of the K-8 restructuring.
A parent considering Rio Plaza should look closely with the school into the factors behind the very low state proficiency rates, the school's approach to addressing them, and what support is available for students who are not yet meeting grade-level standards. The school serves a community with substantial economic need and may require families to understand what additional resources the school or district provides to support student learning.
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