The top reported proficiency rate is 32% in Math. The lowest is 28% in Science.
Original Research by School Decision on Rocketship Delta Prep
Rocketship Delta Prep is a public charter elementary school on Cavallo Road in Antioch, serving kindergarten through fifth grade. It operates as its own single-campus charter district, authorized by Antioch Unified School District, and is part of the broader Rocketship Public Schools network. The school's enrollment is solidly mid-sized for an elementary campus, spread relatively evenly across grade levels with the heaviest concentration in kindergarten as the pipeline fills.
The student body is predominantly Hispanic and Black, with a large majority of students qualifying for free or reduced-price lunch. Data on English learner enrollment and students with IEPs was not available in what we reviewed. The school draws from a community that is, by Antioch's own trajectory, working-class and price-pressured: the city has grown rapidly over recent decades as East Bay residents moved inland seeking housing they could afford, and the data shows a substantial share of renters and low-income families are cost-burdened. Home values in the zip code sit well above the national level but have dipped year over year, and rents have edged up slightly.
On the California state assessments, proficiency rates across tested grades and subjects are below the midpoint compared with districts in Contra Costa County. In math, rates are in the low-to-mid thirties across the tested grades. English language arts results are more uneven: third and fourth grade results are in the high teens to low twenties, while fifth grade comes in meaningfully higher, in the low-to-mid forties. Science, tested only at fifth grade, lands in the high twenties. These are the first reported results available for this school, so there is no multi-year trend to read. Parents who want to understand whether scores are improving, holding, or declining will need to ask the school directly or watch for next year's results. State testing data alone does not capture a school's full instructional picture, but the current numbers are worth discussing with the school, particularly in ELA at the lower grades.
The most consequential recent development for any family considering Rocketship Delta Prep is the charter renewal process. The school's network board took up the renewal petition in late 2025 for a multi-year term beginning in 2026. Whether the school continues operating under its current authorization is still a live question, and parents weighing enrollment, especially for younger children who would be there through fifth grade, should ask the school directly about where that process stands. A second network-level change of note: Rocketship adopted a formal policy in 2025 on the use of artificial intelligence in instruction and student assignments. That policy will shape classroom practice across the network going forward, and parents who have views on AI in elementary education may want to ask what it looks like in day-to-day teaching.
Antioch itself gives the school a particular backdrop. The city's historic Rivertown district along the San Joaquin River has a walkable core with restaurants, local shops, and civic spaces, including a restored theater and a new outdoor gathering space the city is developing downtown. Away from that core, Antioch is largely car-dependent. Regional parks, including Black Diamond Mines and Contra Loma, sit on the city's western edge, and the Antioch BART station at Hillcrest Avenue connects to the broader Bay Area rail network. Healthcare and the public sector anchor local employment, with Sutter Delta Medical Center and Kaiser Permanente among the major employers publicly reported. The school sits about a mile east of downtown in a residential area.
Program offerings at the school were not detailed in the data available. There is no graduation rate applicable here, as the school serves only elementary grades. Chronic absenteeism data was also not available for this campus.
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