Original Research by School Decision on Wilmer Amina Carter High
Wilmer Amina Carter High is a mid-sized public high school in Rialto serving grades nine through twelve, located in the Inland Empire east of Los Angeles. The school sits in a predominantly residential area with Spanish Revival, ranch-style, and New Traditional homes mixed with townhouses, in a city where about two-thirds of households own their homes. The neighborhood carries an industrial character too, with warehouses and logistics operations south of the freeway corridor.
The student body at Carter is drawn largely from low-income households. A substantial majority of students qualify for free or reduced-price lunch. The enrollment is predominantly Hispanic, with smaller shares of Black, Asian, and white students. The school size is typical for a large suburban high school, with roughly balanced grade-level cohorts across grades nine through twelve.
On state assessments administered most recently, students showed uneven performance across subjects. In English language arts, the proficiency rate was around the two-thirds level—a solid pass-rate floor that suggests many students are meeting grade-level standards in reading and writing. Mathematics presents a steeper challenge: only about one-quarter of students met proficiency benchmarks. Science proficiency, at roughly one-third, falls between those poles. These patterns are common in California high schools serving high-poverty populations, and parents may want to look into what supports the school offers in math specifically and how it is diagnosing and addressing gaps.
The current data does not include a four-year graduation rate, so the school's progress toward on-time diploma completion cannot be characterized. Nor are data available on chronic absenteeism, English learner share, or special-education enrollment, so a parent seeking those details should reach out to the school directly.
Rialto Unified, the district serving Carter, has undergone two significant changes relevant to families. The district passed a general-obligation bond several years ago for facility improvements—new science, engineering, and vocational classrooms, replacement of aging water and gas infrastructure, removal of environmental hazards, and conversion of portable classrooms to permanent buildings. This work is ongoing and funded through property taxes on all district land, reshaping the physical condition of schools over time. The district also shifted from at-large to by-trustee-area board elections under the California Voting Rights Act, meaning families now vote for board members representing their geographic area rather than the whole district.
Rialto itself is a city of mixed character. The historic downtown along Foothill Boulevard is undergoing streetscape transformation and civic revitalization intended to attract business and foot traffic. Beyond the downtown core and a few pedestrian-planned neighborhoods, Rialto functions as a car-oriented place with residential streets, shopping centers, and freeway access. Transit connects to the Metrolink San Bernardino Line station, which offers regional commuting. The Agua Mansa Industrial Corridor south of Interstate 10 anchors the local economy alongside the school district as the largest employer. Major private employers include Niagara Bottling, Medline Industries, Amazon, FedEx, and other logistics and distribution firms.
Housing values in the zip code have remained relatively stable, with median home prices below the state average. Rents also run below state levels, making the area more affordable than much of Southern California. The city is experiencing active growth, with hundreds of new homes under construction or planned, including multi-family infill projects and an ambitious downtown revitalization program that anticipates higher-density residential development. This growth suggests families are choosing to move to Rialto for affordability and space within commuting distance of regional job centers.
Carter serves a population committed to high school completion in a community experiencing real economic change. The strength in English language arts is noteworthy; the gap in mathematics is significant and worth understanding in depth. The school operates in a district with improving physical infrastructure and in a city positioned for continued residential expansion.
See more original research from School Decision →