Island Elementary, Lemoore CA - Test Scores & Data

Original Research by School Decision on Island Elementary

Island Elementary is a charter school serving kindergarten through eighth grade in Lemoore, a small San Joaquin Valley city anchored by Naval Air Station Lemoore and the Leprino Foods cheese processing plants. The school is the sole campus of Island Union Elementary School District, a one-school charter district, and enrolls a student body of moderate size with a composition that is majority white and a substantial share Hispanic, with roughly half of students qualifying for free or reduced-price lunch.

The school's academic profile shows uneven performance across grades and subjects. In English language arts, students in grades six through eight perform notably better, with proficiency well above the midpoint, while third and fourth graders show weaker results. Math proficiency climbs sharply from a low point in fourth grade to a peak in sixth grade, then declines in grades seven and eight. Science results are mixed: fifth grade students reach about half proficiency on the California Science Test, while eighth graders show significantly lower results. Overall, when proficiency is averaged across tested grades and subjects, Island Elementary sits in the top quartile among Kings County's districts, a meaningful position that reflects strength in upper middle grades alongside acknowledged soft spots in the elementary grades. A parent evaluating the school may want to ask specifically about math intervention in the fourth grade and science instruction in eighth grade.

The district's physical infrastructure is undergoing transformation. In 2021, the school secured state funding for design of a major campus rebuild that would replace aging portable classrooms with new brick-and-mortar facilities and add a gymnasium and multipurpose room. For a one-school district, this investment signals a commitment to upgrading the learning environment over time, though completion timelines were not available in the data.

Lemoore itself is a mostly residential small city with a preserved historic downtown grid where shops, restaurants, the library, city hall, and some schools sit within walking distance of one another. Outside the downtown core, the city follows typical suburban patterns of single-family homes on winding streets. The housing market is modestly valued relative to California statewide benchmarks, and rental properties are plentiful, partly because the Naval Air Station draws temporary military-connected residents. The city's population has grown incrementally, and new residential development is continuing through both infill and new subdivision construction, though the overall growth trajectory remains moderate.

The charter status of the school is a structural fact that shapes enrollment and authorization, neither a strength nor a limitation on its own. The school operates within the broader Kings County context and does not offer advanced high school coursework or career pathway programs, as those typically sit outside the K-8 grade band. The one-school district structure means families committed to Island Elementary have no parallel district school option. State testing data from recent years shows only one year of results, so trend information is not yet available to assess momentum or direction of change.

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Academic performance

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

Math

Grade 338%

School 38% · District 38%

▼ 5 pts below state median · ▼ 2 pts below county median

Grade 431%

School 31% · District 31%

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

Grade 556%

School 56% · District 56%

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

Grade 675%

School 75% · District 75%

▲ 44 pts above state median · ▲ 42 pts above county median

Grade 757%

School 57% · District 57%

▲ 27 pts above state median · ▲ 26 pts above county median

Grade 855%

School 55% · District 55%

▲ 27 pts above state median · ▲ 34 pts above county median

English language arts

Grade 345%

School 45% · District 45%

▲ 4 pts above state median · ▲ 2 pts above county median

Grade 453%

School 53% · District 53%

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

Grade 562%

School 62% · District 62%

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

Grade 666%

School 66% · District 66%

▲ 22 pts above state median · ▲ 15 pts above county median

Grade 776%

School 76% · District 76%

▲ 30 pts above state median · ▲ 27 pts above county median

Grade 867%

School 67% · District 67%

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

Science

Grade 548%

School 48% · District 48%

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

Grade 818%

School 18% · District 18%

▼ 7 pts below state median · even with county median

Social studies

Grade 858%

School 58% · District 58%

▲ 9 pts above state median · ▲ 15 pts above county median

This schoolIsland Union Elementary, 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-income31%Higher-income62%31 pp gap

Grade 4Lower-income45%Higher-income71%26 pp gap

Grade 5Lower-income62%Higher-income63%1 pp gap

Grade 6Lower-income61%Higher-income69%8 pp gap

Grade 7Lower-income75%Higher-income76%1 pp gap

Grade 8Lower-income66%Higher-income69%4 pp gap

Mathematics

Grade 3Lower-income27%Higher-income52%26 pp gap

Grade 4Lower-income26%Higher-income43%17 pp gap

Grade 5Lower-income42%Higher-income71%29 pp gap

Grade 6Lower-income61%Higher-income83%22 pp gap

Grade 7Lower-income50%Higher-income62%12 pp gap

Grade 8Lower-income45%Higher-income65%21 pp gap