Antioch Charter Academy Ii, Antioch CA

Original Research by School Decision on Antioch Charter Academy Ii

Antioch Charter Academy II is a small elementary and middle school serving kindergarten through grade eight in Antioch, with enrollment of roughly two hundred students. As a charter school, it operates independently from the Antioch school district while remaining publicly funded and tuition-free. The school recently completed a seven-year charter renewal in fall 2025, a high-performance designation that secures its continued operation through the early 2030s and signals stability for families making a multi-year enrollment commitment.

The student body is economically diverse: roughly forty-five percent of students qualify for free or reduced-price meals. The enrollment is racially and ethnically mixed, with substantial representation of Hispanic, white, and multiracial students, alongside smaller shares of Black, Asian, and Native Hawaiian or Pacific Islander students. Data on English learner and special education enrollment was not available, so a parent may want to check the school's current staffing and support capacity in those areas.

Academic performance at Antioch Charter Academy II is mixed. In English language arts, results show a pattern: proficiency is weak in the early elementary grades, grows noticeably in the middle elementary years, and reaches its strongest levels in the upper middle school years, with grade seven showing notably high proficiency. Math proficiency across the school hovers in the low range through grade seven, then improves meaningfully at grade eight. Science proficiency, where tested, is moderate. Overall, the school's mean proficiency index places it below the midpoint among tested schools in Contra Costa County, indicating room for growth in core academics. The data reflects only the most recent school year, so a parent looking for evidence of improvement over time would need to inquire with the school directly about trends.

The school's recent context includes some logistical uncertainty. New buildings the school planned to occupy at the fairgrounds site could not be opened as of September 2025 due to fire safety issues—specifically unresolved water supply problems that prevented the fire marshal's occupancy sign-off. This means students continue to attend at a different location with no announced timeline for the move. Parents considering enrollment may want to clarify the current facilities and any planned changes.

A strength to note: the school received the California Chief Justice's Civic Learning Award of Merit in 2025, publicly reported recognition reflecting a sustained emphasis on civic education. This identifies an area where the school has made intentional programmatic investment beyond core academics.

Antioch itself is a large Bay Area city on the Delta, historically a riverfront community now expanded with newer residential and commercial growth. The market shows modest housing inventory and relatively stable rental conditions, with a working-class and middle-class population base. The city has a distinct historic downtown (Rivertown) along the San Joaquin River with shops and restaurants; much of daily life elsewhere depends on car access. Sutter Delta Medical Center and Kaiser Permanente are major employers, alongside municipal and county government jobs.

For families seeking a small, locally-rooted charter school with an explicit commitment to civic learning and community, Antioch Charter Academy II offers that identity and now has renewed long-term stability. Its mixed academic profile suggests it is not a high-performing school by state standards, but rather a developing one. A parent should understand the current building situation and ask directly about academic support structures, intervention programs, and any recent staffing changes that may affect classroom experience.

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Academic performance

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

Math

Grade 315%

School 15% · district not reported

▼ 28 pts below state median · ▼ 29 pts below county median

Grade 433%

School 33% · district not reported

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

Grade 532%

School 32% · district not reported

▲ 1 pts above state median · ▲ 1 pts above county median

Grade 630%

School 30% · district not reported

even with state median · ▲ 2 pts above county median

Grade 730%

School 30% · district not reported

even with state median · ▲ 1 pts above county median

Grade 847%

School 47% · district not reported

▲ 20 pts above state median · ▲ 16 pts above county median

English language arts

Grade 325%

School 25% · district not reported

▼ 16 pts below state median · ▼ 16 pts below county median

Grade 419%

School 19% · district not reported

▼ 23 pts below state median · ▼ 23 pts below county median

Grade 541%

School 41% · district not reported

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

Grade 660%

School 60% · district not reported

▲ 16 pts above state median · ▲ 22 pts above county median

Grade 774%

School 74% · district not reported

▲ 28 pts above state median · ▲ 25 pts above county median

Grade 858%

School 58% · district not reported

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

Science

Grade 527%

School 27% · district not reported

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

Grade 847%

School 47% · district not reported

▲ 22 pts above state median · ▲ 18 pts above county median

This schoolDistrict average, 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-income58%Higher-income91%33 pp gap

Mathematics

Grade 7Lower-income17%Higher-income46%29 pp gap