Summary:
ZIP code 90305 has one listed elementary school, Kelso (William H.), serving kindergarten through grade 8. In 2025–2026, Kelso’s all-grades proficiency was 20% in English language arts (ELA), 9% in math, and 9% in science; each result was below both Inglewood Unified and California. Compared with the state, Kelso trailed by 29 points in ELA, 29 in math, and 27 in science—the most important finding is that results were substantially below state levels in every reported subject.
There is no school-to-school leader or trailer in this ZIP code because Kelso is the only school listed, but results vary by grade. Grade 7 ELA stands out positively against the district: Kelso had 35%, versus 34% districtwide, though it was still 16 points below the state. Grade 8 ELA was lower, at 13% compared with 49% statewide. Math also varied, from 24% in grade 3 to 2% in grade 6. Chronic absenteeism is another concern in the supplied figures: Kelso’s 2025–2026 rate was 40%, compared with 30% for the district and 18% for California.
Over time, science and ELA improved while math declined: Kelso’s science proficiency rose from 4% in 2024–2025 to 9% in 2025–2026, and ELA edged up from 19.5% to 20.4%; math fell from 13% to 9%, even as state results increased in all three subjects. SchoolDigger’s statewide ranking was near the bottom of its distribution, moving from the 3rd percentile in 2023–2024 to the 6th in 2024–2025 and back to the 3rd in 2025–2026; its star rating was zero each year. Kelso has 324 students and a 23.4 student–teacher ratio (2024–2025); 89% were free/reduced lunch eligible in school year 2024–2025. With only one school listed, there is no comparable local school against which to judge these figures.
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